677028731 has 8 divisors (see below), whose sum is σ = 692362944. Its totient is φ = 661789440.

The previous prime is 677028643. The next prime is 677028739. The reversal of 677028731 is 137820776.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677028731 is a prime.

It is a super-2 number, since 2×677028731² = 916735805198940722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (677028739) 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, 9206 + ... + 37931.

It is an arithmetic number, because the mean of its divisors is an integer number (86545368).

Almost surely, 2^677028731 is an apocalyptic number.

677028731 is a deficient number, since it is larger than the sum of its proper divisors (15334213).

677028731 is a wasteful number, since it uses less digits than its factorization.

677028731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47461.

The product of its (nonzero) digits is 98784, while the sum is 41.

The square root of 677028731 is about 26019.7757676733. The cubic root of 677028731 is about 878.0832640355.

The spelling of 677028731 in words is "six hundred seventy-seven million, twenty-eight thousand, seven hundred thirty-one".