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70649 = 314353
BaseRepresentation
bin10001001111111001
310120220122
4101033321
54230044
61303025
7412655
oct211771
9116818
1070649
1149097
1234a75
1326207
141ba65
1515dee
hex113f9

70649 has 8 divisors (see below), whose sum is σ = 76032. Its totient is φ = 65520.

The previous prime is 70639. The next prime is 70657. The reversal of 70649 is 94607.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70649 - 28 = 70393 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (70619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1307 + ... + 1359.

It is an arithmetic number, because the mean of its divisors is an integer number (9504).

270649 is an apocalyptic number.

It is an amenable number.

70649 is a deficient number, since it is larger than the sum of its proper divisors (5383).

70649 is a wasteful number, since it uses less digits than its factorization.

70649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 70649 is about 265.7987960846. The cubic root of 70649 is about 41.3398287283.

The spelling of 70649 in words is "seventy thousand, six hundred forty-nine".

Divisors: 1 31 43 53 1333 1643 2279 70649