77960381 has 8 divisors (see below), whose sum is σ = 83251200. Its totient is φ = 72843120.

The previous prime is 77960371. The next prime is 77960383. The reversal of 77960381 is 18306977.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77960381 - 2¹⁸ = 77698237 is a prime.

It is a super-2 number, since 2×77960381² = 12155642011330322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77960383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42461 + ... + 44258.

It is an arithmetic number, because the mean of its divisors is an integer number (10406400).

Almost surely, 2^77960381 is an apocalyptic number.

It is an amenable number.

77960381 is a deficient number, since it is larger than the sum of its proper divisors (5290819).

77960381 is a wasteful number, since it uses less digits than its factorization.

77960381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86779.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 77960381 is about 8829.5175972417. The cubic root of 77960381 is about 427.1935146940.

The spelling of 77960381 in words is "seventy-seven million, nine hundred sixty thousand, three hundred eighty-one".