77146402 has 4 divisors (see below), whose sum is σ = 115719606. Its totient is φ = 38573200.

The previous prime is 77146397. The next prime is 77146417. The reversal of 77146402 is 20464177.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 76405081 + 741321 = 8741^2 + 861^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19286599 + ... + 19286602.

Almost surely, 2^77146402 is an apocalyptic number.

77146402 is a deficient number, since it is larger than the sum of its proper divisors (38573204).

77146402 is a wasteful number, since it uses less digits than its factorization.

77146402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38573203.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 77146402 is about 8783.3024540887. The cubic root of 77146402 is about 425.7015439828.

The spelling of 77146402 in words is "seventy-seven million, one hundred forty-six thousand, four hundred two".