77790630 has 32 divisors (see below), whose sum is σ = 187536384. Its totient is φ = 20650976.

The previous prime is 77790619. The next prime is 77790631. The reversal of 77790630 is 3609777.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77790631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1099 + ... + 12521.

It is an arithmetic number, because the mean of its divisors is an integer number (5860512).

Almost surely, 2^77790630 is an apocalyptic number.

77790630 is an abundant number, since it is smaller than the sum of its proper divisors (109745754).

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

77790630 is a wasteful number, since it uses less digits than its factorization.

77790630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11660.

The product of its (nonzero) digits is 55566, while the sum is 39.

The square root of 77790630 is about 8819.8996592932. The cubic root of 77790630 is about 426.8832322076.

The spelling of 77790630 in words is "seventy-seven million, seven hundred ninety thousand, six hundred thirty".