677421624 has 64 divisors (see below), whose sum is σ = 1854576000. Its totient is φ = 204494720.

The previous prime is 677421623. The next prime is 677421659. The reversal of 677421624 is 426124776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677421623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66247 + ... + 75785.

It is an arithmetic number, because the mean of its divisors is an integer number (28977750).

Almost surely, 2^677421624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 677421624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (927288000).

677421624 is an abundant number, since it is smaller than the sum of its proper divisors (1177154376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

677421624 is a wasteful number, since it uses less digits than its factorization.

677421624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9828 (or 9824 counting only the distinct ones).

The product of its digits is 112896, while the sum is 39.

The square root of 677421624 is about 26027.3245647723. The cubic root of 677421624 is about 878.2530874803.

The spelling of 677421624 in words is "six hundred seventy-seven million, four hundred twenty-one thousand, six hundred twenty-four".