77400671 has 2 divisors, whose sum is σ = 77400672. Its totient is φ = 77400670.

The previous prime is 77400641. The next prime is 77400679. The reversal of 77400671 is 17600477.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77400671 - 2¹⁴ = 77384287 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 (77400679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38700335 + 38700336.

It is an arithmetic number, because the mean of its divisors is an integer number (38700336).

Almost surely, 2^77400671 is an apocalyptic number.

77400671 is a deficient number, since it is larger than the sum of its proper divisors (1).

77400671 is an equidigital number, since it uses as much as digits as its factorization.

77400671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 77400671 is about 8797.7651139366. The cubic root of 77400671 is about 426.1687249975.

The spelling of 77400671 in words is "seventy-seven million, four hundred thousand, six hundred seventy-one".