76607989 has 2 divisors, whose sum is σ = 76607990. Its totient is φ = 76607988.

The previous prime is 76607987. The next prime is 76608017. The reversal of 76607989 is 98970667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43164900 + 33443089 = 6570^2 + 5783^2 .

It is a cyclic number.

It is not a de Polignac number, because 76607989 - 2¹ = 76607987 is a prime.

Together with 76607987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76607987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38303994 + 38303995.

It is an arithmetic number, because the mean of its divisors is an integer number (38303995).

Almost surely, 2^76607989 is an apocalyptic number.

It is an amenable number.

76607989 is a deficient number, since it is larger than the sum of its proper divisors (1).

76607989 is an equidigital number, since it uses as much as digits as its factorization.

76607989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The square root of 76607989 is about 8752.5989854443. The cubic root of 76607989 is about 424.7088922287.

The spelling of 76607989 in words is "seventy-six million, six hundred seven thousand, nine hundred eighty-nine".