77416231 has 2 divisors, whose sum is σ = 77416232. Its totient is φ = 77416230.

The previous prime is 77416219. The next prime is 77416253. The reversal of 77416231 is 13261477.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77416231 - 2⁷ = 77416103 is a prime.

It is a super-2 number, since 2×77416231² = 11986545644490722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 77416193 and 77416202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77416271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38708115 + 38708116.

It is an arithmetic number, because the mean of its divisors is an integer number (38708116).

Almost surely, 2^77416231 is an apocalyptic number.

77416231 is a deficient number, since it is larger than the sum of its proper divisors (1).

77416231 is an equidigital number, since it uses as much as digits as its factorization.

77416231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 31.

The square root of 77416231 is about 8798.6493849909. The cubic root of 77416231 is about 426.1972809129.

The spelling of 77416231 in words is "seventy-seven million, four hundred sixteen thousand, two hundred thirty-one".