680924497 has 4 divisors (see below), whose sum is σ = 742826736. Its totient is φ = 619022260.

The previous prime is 680924483. The next prime is 680924561. The reversal of 680924497 is 794429086.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 680924497 - 2²³ = 672535889 is a prime.

It is a super-2 number, since 2×680924497² = 927316341229406018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 680924497.

It is not an unprimeable number, because it can be changed into a prime (680924467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30951103 + ... + 30951124.

It is an arithmetic number, because the mean of its divisors is an integer number (185706684).

Almost surely, 2^680924497 is an apocalyptic number.

It is an amenable number.

680924497 is a deficient number, since it is larger than the sum of its proper divisors (61902239).

680924497 is a wasteful number, since it uses less digits than its factorization.

680924497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61902238.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 680924497 is about 26094.5300206767. The cubic root of 680924497 is about 879.7642692454.

The spelling of 680924497 in words is "six hundred eighty million, nine hundred twenty-four thousand, four hundred ninety-seven".