677392081 has 8 divisors (see below), whose sum is σ = 717915744. Its totient is φ = 636943680.

The previous prime is 677392073. The next prime is 677392091. The reversal of 677392081 is 180293776.

It is a happy number.

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 677392081 - 2³ = 677392073 is a prime.

It is a super-2 number, since 2×677392081² = 917720062803021122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (677392091) 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, 286 + ... + 36808.

It is an arithmetic number, because the mean of its divisors is an integer number (89739468).

Almost surely, 2^677392081 is an apocalyptic number.

It is an amenable number.

677392081 is a deficient number, since it is larger than the sum of its proper divisors (40523663).

677392081 is a wasteful number, since it uses less digits than its factorization.

677392081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37631.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 677392081 is about 26026.7570204204. The cubic root of 677392081 is about 878.2403201444.

The spelling of 677392081 in words is "six hundred seventy-seven million, three hundred ninety-two thousand, eighty-one".