679858481 has 4 divisors (see below), whose sum is σ = 691003764. Its totient is φ = 668713200.

The previous prime is 679858471. The next prime is 679858483. The reversal of 679858481 is 184858976.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6974881 + 672883600 = 2641^2 + 25940^2 .

It is a cyclic number.

It is not a de Polignac number, because 679858481 - 2¹⁰ = 679857457 is a prime.

It is a super-2 number, since 2×679858481² = 924415108375254722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679858483) 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, 5572550 + ... + 5572671.

It is an arithmetic number, because the mean of its divisors is an integer number (172750941).

Almost surely, 2^679858481 is an apocalyptic number.

679858481 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

679858481 is a deficient number, since it is larger than the sum of its proper divisors (11145283).

679858481 is a wasteful number, since it uses less digits than its factorization.

679858481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11145282.

The product of its digits is 3870720, while the sum is 56.

The square root of 679858481 is about 26074.0959766585. The cubic root of 679858481 is about 879.3049267739.

The spelling of 679858481 in words is "six hundred seventy-nine million, eight hundred fifty-eight thousand, four hundred eighty-one".