77000018 has 8 divisors (see below), whose sum is σ = 117224112. Its totient is φ = 37925316.

The previous prime is 77000003. The next prime is 77000029. The reversal of 77000018 is 81000077.

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

It is a junction number, because it is equal to n+sod(n) for n = 76999957 and 77000002.

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, 287180 + ... + 287447.

It is an arithmetic number, because the mean of its divisors is an integer number (14653014).

Almost surely, 2^77000018 is an apocalyptic number.

77000018 is a deficient number, since it is larger than the sum of its proper divisors (40224094).

77000018 is a wasteful number, since it uses less digits than its factorization.

77000018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574696.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 77000018 is about 8774.9654130373. The cubic root of 77000018 is about 425.4321196621.

The spelling of 77000018 in words is "seventy-seven million, eighteen", and thus it is an aban number and an uban number.