780087632 has 20 divisors (see below), whose sum is σ = 1513834656. Its totient is φ = 389420640.

The previous prime is 780087631. The next prime is 780087647. The reversal of 780087632 is 236780087.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 780087632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780087631) 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, 28538 + ... + 48729.

Almost surely, 2^780087632 is an apocalyptic number.

It is an amenable number.

780087632 is a deficient number, since it is larger than the sum of its proper divisors (733747024).

780087632 is a wasteful number, since it uses less digits than its factorization.

780087632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77906 (or 77900 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 780087632 is about 27930.0489079414. The cubic root of 780087632 is about 920.5508799068.

The spelling of 780087632 in words is "seven hundred eighty million, eighty-seven thousand, six hundred thirty-two".