74776081 has 8 divisors (see below), whose sum is σ = 79314120. Its totient is φ = 70253568.

The previous prime is 74776063. The next prime is 74776099. The reversal of 74776081 is 18067747.

It is an interprime number because it is at equal distance from previous prime (74776063) and next prime (74776099).

It can be written as a sum of positive squares in 4 ways, for example, as 6548481 + 68227600 = 2559^2 + 8260^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74776081 - 2²³ = 66387473 is a prime.

It is a super-2 number, since 2×74776081² = 11182924579437122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74776021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6925 + ... + 14053.

It is an arithmetic number, because the mean of its divisors is an integer number (9914265).

Almost surely, 2^74776081 is an apocalyptic number.

It is an amenable number.

74776081 is a deficient number, since it is larger than the sum of its proper divisors (4538039).

74776081 is a wasteful number, since it uses less digits than its factorization.

74776081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7763.

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 74776081 is about 8647.3164045269. The cubic root of 74776081 is about 421.2962240629.

The spelling of 74776081 in words is "seventy-four million, seven hundred seventy-six thousand, eighty-one".