77545434 has 16 divisors (see below), whose sum is σ = 156515040. Its totient is φ = 25611120.

The previous prime is 77545421. The next prime is 77545453. The reversal of 77545434 is 43454577.

It is a junction number, because it is equal to n+sod(n) for n = 77545392 and 77545401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58632 + ... + 59939.

It is an arithmetic number, because the mean of its divisors is an integer number (9782190).

Almost surely, 2^77545434 is an apocalyptic number.

77545434 is an abundant number, since it is smaller than the sum of its proper divisors (78969606).

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

77545434 is a wasteful number, since it uses less digits than its factorization.

77545434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118685.

The product of its digits is 235200, while the sum is 39.

The square root of 77545434 is about 8805.9885305399. The cubic root of 77545434 is about 426.4342482820.

The spelling of 77545434 in words is "seventy-seven million, five hundred forty-five thousand, four hundred thirty-four".