77795645 has 16 divisors (see below), whose sum is σ = 97109760. Its totient is φ = 59776704.

The previous prime is 77795639. The next prime is 77795677. The reversal of 77795645 is 54659777.

It is a cyclic number.

It is not a de Polignac number, because 77795645 - 2⁶ = 77795581 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77795593 and 77795602.

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, 11954 + ... + 17276.

It is an arithmetic number, because the mean of its divisors is an integer number (6069360).

Almost surely, 2^77795645 is an apocalyptic number.

It is an amenable number.

77795645 is a deficient number, since it is larger than the sum of its proper divisors (19314115).

77795645 is a wasteful number, since it uses less digits than its factorization.

77795645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5444.

The product of its digits is 1852200, while the sum is 50.

The square root of 77795645 is about 8820.1839549978. The cubic root of 77795645 is about 426.8924054349.

The spelling of 77795645 in words is "seventy-seven million, seven hundred ninety-five thousand, six hundred forty-five".