76231609 has 2 divisors, whose sum is σ = 76231610. Its totient is φ = 76231608.

The previous prime is 76231601. The next prime is 76231613. The reversal of 76231609 is 90613267.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40195600 + 36036009 = 6340^2 + 6003^2 .

It is a cyclic number.

It is not a de Polignac number, because 76231609 - 2³ = 76231601 is a prime.

It is a super-2 number, since 2×76231609² = 11622516421457762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (76231601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38115804 + 38115805.

It is an arithmetic number, because the mean of its divisors is an integer number (38115805).

Almost surely, 2^76231609 is an apocalyptic number.

It is an amenable number.

76231609 is a deficient number, since it is larger than the sum of its proper divisors (1).

76231609 is an equidigital number, since it uses as much as digits as its factorization.

76231609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 76231609 is about 8731.0714691841. The cubic root of 76231609 is about 424.0122092871.

The spelling of 76231609 in words is "seventy-six million, two hundred thirty-one thousand, six hundred nine".