677497381 has 8 divisors (see below), whose sum is σ = 742842144. Its totient is φ = 612778320.

The previous prime is 677497369. The next prime is 677497399. The reversal of 677497381 is 183794776.

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

It is not a de Polignac number, because 677497381 - 2⁵ = 677497349 is a prime.

It is a super-2 number, since 2×677497381² = 918005402523718322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677297381) 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, 154155 + ... + 158488.

It is an arithmetic number, because the mean of its divisors is an integer number (92855268).

Almost surely, 2^677497381 is an apocalyptic number.

It is an amenable number.

677497381 is a deficient number, since it is larger than the sum of its proper divisors (65344763).

677497381 is a wasteful number, since it uses less digits than its factorization.

677497381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312851.

The product of its digits is 1778112, while the sum is 52.

The square root of 677497381 is about 26028.7798599934. The cubic root of 677497381 is about 878.2858250137.

The spelling of 677497381 in words is "six hundred seventy-seven million, four hundred ninety-seven thousand, three hundred eighty-one".