77860413 has 16 divisors (see below), whose sum is σ = 116931840. Its totient is φ = 51194592.

The previous prime is 77860411. The next prime is 77860417. The reversal of 77860413 is 31406877.

It is not a de Polignac number, because 77860413 - 2¹ = 77860411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77860411) 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, 17781 + ... + 21722.

It is an arithmetic number, because the mean of its divisors is an integer number (7308240).

Almost surely, 2^77860413 is an apocalyptic number.

77860413 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

77860413 is a deficient number, since it is larger than the sum of its proper divisors (39071427).

77860413 is a wasteful number, since it uses less digits than its factorization.

77860413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39585 (or 39579 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 77860413 is about 8823.8547698837. The cubic root of 77860413 is about 427.0108409331.

The spelling of 77860413 in words is "seventy-seven million, eight hundred sixty thousand, four hundred thirteen".