77901630 has 32 divisors (see below), whose sum is σ = 187649568. Its totient is φ = 20697600.

The previous prime is 77901619. The next prime is 77901643. The reversal of 77901630 is 3610977.

It is a junction number, because it is equal to n+sod(n) for n = 77901591 and 77901600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3810 + ... + 13050.

It is an arithmetic number, because the mean of its divisors is an integer number (5864049).

Almost surely, 2^77901630 is an apocalyptic number.

77901630 is an abundant number, since it is smaller than the sum of its proper divisors (109747938).

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

77901630 is a wasteful number, since it uses less digits than its factorization.

77901630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9532.

The product of its (nonzero) digits is 7938, while the sum is 33.

The square root of 77901630 is about 8826.1900047529. The cubic root of 77901630 is about 427.0861766114.

The spelling of 77901630 in words is "seventy-seven million, nine hundred one thousand, six hundred thirty".