70641632 has 24 divisors (see below), whose sum is σ = 140756616. Its totient is φ = 34893952.

The previous prime is 70641631. The next prime is 70641661. The reversal of 70641632 is 23614607.

It is a junction number, because it is equal to n+sod(n) for n = 70641595 and 70641604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70641631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10643 + ... + 15954.

It is an arithmetic number, because the mean of its divisors is an integer number (5864859).

Almost surely, 2^70641632 is an apocalyptic number.

It is an amenable number.

70641632 is a deficient number, since it is larger than the sum of its proper divisors (70114984).

70641632 is a wasteful number, since it uses less digits than its factorization.

70641632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26690 (or 26682 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 70641632 is about 8404.8576430538. The cubic root of 70641632 is about 413.3839156503.

The spelling of 70641632 in words is "seventy million, six hundred forty-one thousand, six hundred thirty-two".