77674381 has 8 divisors (see below), whose sum is σ = 81797760. Its totient is φ = 73613232.

The previous prime is 77674367. The next prime is 77674397. The reversal of 77674381 is 18347677.

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 77674381 - 2⁵ = 77674349 is a prime.

It is a super-2 number, since 2×77674381² = 12066618927466322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77674361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12985 + ... + 17998.

It is an arithmetic number, because the mean of its divisors is an integer number (10224720).

Almost surely, 2^77674381 is an apocalyptic number.

It is an amenable number.

77674381 is a deficient number, since it is larger than the sum of its proper divisors (4123379).

77674381 is a wasteful number, since it uses less digits than its factorization.

77674381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31115.

The product of its digits is 197568, while the sum is 43.

The square root of 77674381 is about 8813.3070410601. The cubic root of 77674381 is about 426.6704838390.

It can be divided in two parts, 776 and 74381, that added together give a palindrome (75157).

The spelling of 77674381 in words is "seventy-seven million, six hundred seventy-four thousand, three hundred eighty-one".