679540624 has 105 divisors (see below), whose sum is σ = 1621142427. Its totient is φ = 275903712.

The previous prime is 679540621. The next prime is 679540627. The reversal of 679540624 is 426045976.

It is a happy number.

The square root of 679540624 is 26068.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (679540621) and next prime (679540627).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679540621) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 35765287 + ... + 35765305.

Almost surely, 2^679540624 is an apocalyptic number.

679540624 is the 26068-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679540624

679540624 is an abundant number, since it is smaller than the sum of its proper divisors (941601803).

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

679540624 is an frugal number, since it uses more digits than its factorization.

679540624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The cubic root of 679540624 is about 879.1678704096.

The spelling of 679540624 in words is "six hundred seventy-nine million, five hundred forty thousand, six hundred twenty-four".