76405477 has 2 divisors, whose sum is σ = 76405478. Its totient is φ = 76405476.

The previous prime is 76405423. The next prime is 76405493. The reversal of 76405477 is 77450467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67914081 + 8491396 = 8241^2 + 2914^2 .

It is a cyclic number.

It is not a de Polignac number, because 76405477 - 2²³ = 68016869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76405577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38202738 + 38202739.

It is an arithmetic number, because the mean of its divisors is an integer number (38202739).

Almost surely, 2^76405477 is an apocalyptic number.

It is an amenable number.

76405477 is a deficient number, since it is larger than the sum of its proper divisors (1).

76405477 is an equidigital number, since it uses as much as digits as its factorization.

76405477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 164640, while the sum is 40.

The square root of 76405477 is about 8741.0226518411. The cubic root of 76405477 is about 424.3343249139.

The spelling of 76405477 in words is "seventy-six million, four hundred five thousand, four hundred seventy-seven".