77016231 has 16 divisors (see below), whose sum is σ = 115545600. Its totient is φ = 50692824.

The previous prime is 77016227. The next prime is 77016271. The reversal of 77016231 is 13261077.

It is not a de Polignac number, because 77016231 - 2² = 77016227 is a prime.

It is a super-2 number, since 2×77016231² = 11862999674890722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 77016195 and 77016204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77016271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15921 + ... + 20186.

It is an arithmetic number, because the mean of its divisors is an integer number (7221600).

Almost surely, 2^77016231 is an apocalyptic number.

77016231 is a deficient number, since it is larger than the sum of its proper divisors (38529369).

77016231 is a wasteful number, since it uses less digits than its factorization.

77016231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36195 (or 36189 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 77016231 is about 8775.8891857179. The cubic root of 77016231 is about 425.4619770010.

The spelling of 77016231 in words is "seventy-seven million, sixteen thousand, two hundred thirty-one".