76191964 has 24 divisors (see below), whose sum is σ = 134879360. Its totient is φ = 37658304.

The previous prime is 76191949. The next prime is 76191967. The reversal of 76191964 is 46919167.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 76191964.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76191967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204082 + ... + 204454.

Almost surely, 2^76191964 is an apocalyptic number.

It is an amenable number.

76191964 is a deficient number, since it is larger than the sum of its proper divisors (58687396).

76191964 is a wasteful number, since it uses less digits than its factorization.

76191964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829 (or 827 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The square root of 76191964 is about 8728.8008340207. The cubic root of 76191964 is about 423.9386926310.

The spelling of 76191964 in words is "seventy-six million, one hundred ninety-one thousand, nine hundred sixty-four".