77385090 has 32 divisors (see below), whose sum is σ = 186042816. Its totient is φ = 20600640.

The previous prime is 77385073. The next prime is 77385097. The reversal of 77385090 is 9058377.

It is not an unprimeable number, because it can be changed into a prime (77385097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18864 + ... + 22596.

It is an arithmetic number, because the mean of its divisors is an integer number (5813838).

Almost surely, 2^77385090 is an apocalyptic number.

77385090 is an abundant number, since it is smaller than the sum of its proper divisors (108657726).

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

77385090 is a wasteful number, since it uses less digits than its factorization.

77385090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4434.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 77385090 is about 8796.8795603896. The cubic root of 77385090 is about 426.1401267075.

The spelling of 77385090 in words is "seventy-seven million, three hundred eighty-five thousand, ninety".