77713252 has 6 divisors (see below), whose sum is σ = 135998198. Its totient is φ = 38856624.

The previous prime is 77713241. The next prime is 77713267. The reversal of 77713252 is 25231777.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 46977316 + 30735936 = 6854^2 + 5544^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9714153 + ... + 9714160.

Almost surely, 2^77713252 is an apocalyptic number.

It is an amenable number.

77713252 is a deficient number, since it is larger than the sum of its proper divisors (58284946).

77713252 is a wasteful number, since it uses less digits than its factorization.

77713252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19428317 (or 19428315 counting only the distinct ones).

The product of its digits is 20580, while the sum is 34.

The square root of 77713252 is about 8815.5120100877. The cubic root of 77713252 is about 426.7416456229.

The spelling of 77713252 in words is "seventy-seven million, seven hundred thirteen thousand, two hundred fifty-two".