76531669 has 2 divisors, whose sum is σ = 76531670. Its totient is φ = 76531668.

The previous prime is 76531661. The next prime is 76531699. The reversal of 76531669 is 96613567.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76475025 + 56644 = 8745^2 + 238^2 .

It is a cyclic number.

It is not a de Polignac number, because 76531669 - 2³ = 76531661 is a prime.

It is a super-2 number, since 2×76531669² = 11714192719851122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76531661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38265834 + 38265835.

It is an arithmetic number, because the mean of its divisors is an integer number (38265835).

Almost surely, 2^76531669 is an apocalyptic number.

It is an amenable number.

76531669 is a deficient number, since it is larger than the sum of its proper divisors (1).

76531669 is an equidigital number, since it uses as much as digits as its factorization.

76531669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 43.

The square root of 76531669 is about 8748.2380511735. The cubic root of 76531669 is about 424.5678079326.

The spelling of 76531669 in words is "seventy-six million, five hundred thirty-one thousand, six hundred sixty-nine".