76507977 has 16 divisors (see below), whose sum is σ = 125552000. Its totient is φ = 40355712.

The previous prime is 76507957. The next prime is 76507979. The reversal of 76507977 is 77970567.

It is a happy number.

It is not a de Polignac number, because 76507977 - 2¹⁶ = 76442441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76507979) 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, 139852 + ... + 140397.

It is an arithmetic number, because the mean of its divisors is an integer number (7847000).

Almost surely, 2^76507977 is an apocalyptic number.

It is an amenable number.

76507977 is a deficient number, since it is larger than the sum of its proper divisors (49044023).

76507977 is a wasteful number, since it uses less digits than its factorization.

76507977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280272.

The product of its (nonzero) digits is 648270, while the sum is 48.

The square root of 76507977 is about 8746.8838451188. The cubic root of 76507977 is about 424.5239920902.

The spelling of 76507977 in words is "seventy-six million, five hundred seven thousand, nine hundred seventy-seven".