76945997 has 2 divisors, whose sum is σ = 76945998. Its totient is φ = 76945996.

The previous prime is 76945993. The next prime is 76946021. The reversal of 76945997 is 79954967.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72829156 + 4116841 = 8534^2 + 2029^2 .

It is an emirp because it is prime and its reverse (79954967) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76945997 - 2² = 76945993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76945993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38472998 + 38472999.

It is an arithmetic number, because the mean of its divisors is an integer number (38472999).

Almost surely, 2^76945997 is an apocalyptic number.

It is an amenable number.

76945997 is a deficient number, since it is larger than the sum of its proper divisors (1).

76945997 is an equidigital number, since it uses as much as digits as its factorization.

76945997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4286520, while the sum is 56.

The square root of 76945997 is about 8771.8867411749. The cubic root of 76945997 is about 425.3326060697.

The spelling of 76945997 in words is "seventy-six million, nine hundred forty-five thousand, nine hundred ninety-seven".