77620377 has 16 divisors (see below), whose sum is σ = 113679360. Its totient is φ = 46891152.

The previous prime is 77620363. The next prime is 77620379. The reversal of 77620377 is 77302677.

It is not a de Polignac number, because 77620377 - 2¹¹ = 77618329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77620379) 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, 28293 + ... + 30914.

It is an arithmetic number, because the mean of its divisors is an integer number (7104960).

Almost surely, 2^77620377 is an apocalyptic number.

It is an amenable number.

77620377 is a deficient number, since it is larger than the sum of its proper divisors (36058983).

77620377 is a wasteful number, since it uses less digits than its factorization.

77620377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59252.

The product of its (nonzero) digits is 86436, while the sum is 39.

The square root of 77620377 is about 8810.2427321839. The cubic root of 77620377 is about 426.5715784057.

The spelling of 77620377 in words is "seventy-seven million, six hundred twenty thousand, three hundred seventy-seven".