70909000 has 64 divisors (see below), whose sum is σ = 173197440. Its totient is φ = 27121600.

The previous prime is 70908991. The next prime is 70909009. The reversal of 70909000 is 90907.

It is an interprime number because it is at equal distance from previous prime (70908991) and next prime (70909009).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (70909009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21459 + ... + 24541.

It is an arithmetic number, because the mean of its divisors is an integer number (2706210).

Almost surely, 2^70909000 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 70909000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86598720).

70909000 is an abundant number, since it is smaller than the sum of its proper divisors (102288440).

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

70909000 is a wasteful number, since it uses less digits than its factorization.

70909000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3127 (or 3113 counting only the distinct ones).

The product of its (nonzero) digits is 567, while the sum is 25.

The square root of 70909000 is about 8420.7481852862. The cubic root of 70909000 is about 413.9047911318.

Adding to 70909000 its reverse (90907), we get a palindrome (70999907).

The spelling of 70909000 in words is "seventy million, nine hundred nine thousand".