77641351 has 2 divisors, whose sum is σ = 77641352. Its totient is φ = 77641350.

The previous prime is 77641337. The next prime is 77641357. The reversal of 77641351 is 15314677.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77641351 - 2²⁵ = 44086919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77641357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38820675 + 38820676.

It is an arithmetic number, because the mean of its divisors is an integer number (38820676).

Almost surely, 2^77641351 is an apocalyptic number.

77641351 is a deficient number, since it is larger than the sum of its proper divisors (1).

77641351 is an equidigital number, since it uses as much as digits as its factorization.

77641351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 34.

The square root of 77641351 is about 8811.4329708623. The cubic root of 77641351 is about 426.6099966102.

The spelling of 77641351 in words is "seventy-seven million, six hundred forty-one thousand, three hundred fifty-one".