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BaseRepresentation
bin10001001111011100
310120212120
4101033130
54224440
61302540
7412614
oct211734
9116776
1070620
1149070
1234a50
13261b4
141ba44
1515dd0
hex113dc

70620 has 48 divisors (see below), whose sum is σ = 217728. Its totient is φ = 16960.

The previous prime is 70619. The next prime is 70621. The reversal of 70620 is 2607.

70620 = T32 + T33 + ... + T76.

It is an interprime number because it is at equal distance from previous prime (70619) and next prime (70621).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 70620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 607 + ... + 713.

It is an arithmetic number, because the mean of its divisors is an integer number (4536).

270620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108864).

70620 is an abundant number, since it is smaller than the sum of its proper divisors (147108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70620 is a wasteful number, since it uses less digits than its factorization.

70620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 70620 is about 265.7442379432. The cubic root of 70620 is about 41.3341715635.

The spelling of 70620 in words is "seventy thousand, six hundred twenty".