70640332 has 24 divisors (see below), whose sum is σ = 142136064. Its totient is φ = 30091152.

The previous prime is 70640327. The next prime is 70640359. The reversal of 70640332 is 23304607.

It is a junction number, because it is equal to n+sod(n) for n = 70640297 and 70640306.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2878 + ... + 12229.

It is an arithmetic number, because the mean of its divisors is an integer number (5922336).

Almost surely, 2^70640332 is an apocalyptic number.

It is an amenable number.

70640332 is an abundant number, since it is smaller than the sum of its proper divisors (71495732).

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

70640332 is a wasteful number, since it uses less digits than its factorization.

70640332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15285 (or 15283 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 70640332 is about 8404.7803064685. The cubic root of 70640332 is about 413.3813798351.

Adding to 70640332 its reverse (23304607), we get a palindrome (93944939).

The spelling of 70640332 in words is "seventy million, six hundred forty thousand, three hundred thirty-two".