76650397 has 2 divisors, whose sum is σ = 76650398. Its totient is φ = 76650396.

The previous prime is 76650377. The next prime is 76650403. The reversal of 76650397 is 79305667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66243321 + 10407076 = 8139^2 + 3226^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76650397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76650307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38325198 + 38325199.

It is an arithmetic number, because the mean of its divisors is an integer number (38325199).

Almost surely, 2^76650397 is an apocalyptic number.

It is an amenable number.

76650397 is a deficient number, since it is larger than the sum of its proper divisors (1).

76650397 is an equidigital number, since it uses as much as digits as its factorization.

76650397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 238140, while the sum is 43.

The square root of 76650397 is about 8755.0212449771. The cubic root of 76650397 is about 424.7872466862.

The spelling of 76650397 in words is "seventy-six million, six hundred fifty thousand, three hundred ninety-seven".