77700232 has 16 divisors (see below), whose sum is σ = 145786140. Its totient is φ = 38823936.

The previous prime is 77700191. The next prime is 77700239. The reversal of 77700232 is 23200777.

It can be written as a sum of positive squares in 2 ways, for example, as 76842756 + 857476 = 8766^2 + 926^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77700232.

It is not an unprimeable number, because it can be changed into a prime (77700239) 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, 16048 + ... + 20320.

Almost surely, 2^77700232 is an apocalyptic number.

It is an amenable number.

77700232 is a deficient number, since it is larger than the sum of its proper divisors (68085908).

77700232 is a wasteful number, since it uses less digits than its factorization.

77700232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6552 (or 6548 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 28.

The square root of 77700232 is about 8814.7735081510. The cubic root of 77700232 is about 426.7178123367.

The spelling of 77700232 in words is "seventy-seven million, seven hundred thousand, two hundred thirty-two".