76668525 has 30 divisors (see below), whose sum is σ = 142020362. Its totient is φ = 40888800.

The previous prime is 76668491. The next prime is 76668539. The reversal of 76668525 is 52586667.

It can be written as a sum of positive squares in 3 ways, for example, as 22071204 + 54597321 = 4698^2 + 7389^2 .

It is not a de Polignac number, because 76668525 - 2¹¹ = 76666477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 16906 + ... + 20955.

Almost surely, 2^76668525 is an apocalyptic number.

76668525 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

76668525 is a deficient number, since it is larger than the sum of its proper divisors (65351837).

76668525 is a wasteful number, since it uses less digits than its factorization.

76668525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37883 (or 37869 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 76668525 is about 8756.0564753775. The cubic root of 76668525 is about 424.8207317757.

The spelling of 76668525 in words is "seventy-six million, six hundred sixty-eight thousand, five hundred twenty-five".