77056245 has 64 divisors (see below), whose sum is σ = 158845440. Its totient is φ = 34712064.

The previous prime is 77056201. The next prime is 77056249. The reversal of 77056245 is 54265077.

It is not a de Polignac number, because 77056245 - 2¹⁵ = 77023477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77056249) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 68427 + ... + 69543.

It is an arithmetic number, because the mean of its divisors is an integer number (2481960).

Almost surely, 2^77056245 is an apocalyptic number.

It is an amenable number.

77056245 is an abundant number, since it is smaller than the sum of its proper divisors (81789195).

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

77056245 is a wasteful number, since it uses less digits than its factorization.

77056245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211 (or 1205 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 77056245 is about 8778.1686586668. The cubic root of 77056245 is about 425.5356475672.

The spelling of 77056245 in words is "seventy-seven million, fifty-six thousand, two hundred forty-five".