76603607987 has 2 divisors, whose sum is σ = 76603607988. Its totient is φ = 76603607986.

The previous prime is 76603607981. The next prime is 76603608007. The reversal of 76603607987 is 78970630667.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76603607987 is a prime.

It is a super-2 number, since 2×76603607987² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (76603607981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38301803993 + 38301803994.

It is an arithmetic number, because the mean of its divisors is an integer number (38301803994).

Almost surely, 2^76603607987 is an apocalyptic number.

76603607987 is a deficient number, since it is larger than the sum of its proper divisors (1).

76603607987 is an equidigital number, since it uses as much as digits as its factorization.

76603607987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16003008, while the sum is 59.

The spelling of 76603607987 in words is "seventy-six billion, six hundred three million, six hundred seven thousand, nine hundred eighty-seven".