77461607 has 2 divisors, whose sum is σ = 77461608. Its totient is φ = 77461606.

The previous prime is 77461603. The next prime is 77461621. The reversal of 77461607 is 70616477.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77461607 - 2² = 77461603 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77461603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38730803 + 38730804.

It is an arithmetic number, because the mean of its divisors is an integer number (38730804).

Almost surely, 2^77461607 is an apocalyptic number.

77461607 is a deficient number, since it is larger than the sum of its proper divisors (1).

77461607 is an equidigital number, since it uses as much as digits as its factorization.

77461607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 77461607 is about 8801.2275848316. The cubic root of 77461607 is about 426.2805336985.

The spelling of 77461607 in words is "seventy-seven million, four hundred sixty-one thousand, six hundred seven".