77674445 has 16 divisors (see below), whose sum is σ = 99370800. Its totient is φ = 58082304.

The previous prime is 77674439. The next prime is 77674453. The reversal of 77674445 is 54447677.

It can be written as a sum of positive squares in 8 ways, for example, as 2019241 + 75655204 = 1421^2 + 8698^2 .

It is a cyclic number.

It is not a de Polignac number, because 77674445 - 2²⁰ = 76625869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77674396 and 77674405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9599 + ... + 15731.

It is an arithmetic number, because the mean of its divisors is an integer number (6210675).

Almost surely, 2^77674445 is an apocalyptic number.

It is an amenable number.

77674445 is a deficient number, since it is larger than the sum of its proper divisors (21696355).

77674445 is a wasteful number, since it uses less digits than its factorization.

77674445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6304.

The product of its digits is 658560, while the sum is 44.

The square root of 77674445 is about 8813.3106719325. The cubic root of 77674445 is about 426.6706010244.

The spelling of 77674445 in words is "seventy-seven million, six hundred seventy-four thousand, four hundred forty-five".