77027638 has 8 divisors (see below), whose sum is σ = 116187480. Its totient is φ = 38298480.

The previous prime is 77027611. The next prime is 77027641. The reversal of 77027638 is 83672077.

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

It is a self number, because there is not a number n which added to its sum of digits gives 77027638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107223 + ... + 107938.

It is an arithmetic number, because the mean of its divisors is an integer number (14523435).

Almost surely, 2^77027638 is an apocalyptic number.

77027638 is a deficient number, since it is larger than the sum of its proper divisors (39159842).

77027638 is a wasteful number, since it uses less digits than its factorization.

77027638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215342.

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 77027638 is about 8776.5390673089. The cubic root of 77027638 is about 425.4829812539.

The spelling of 77027638 in words is "seventy-seven million, twenty-seven thousand, six hundred thirty-eight".