679281723 has 12 divisors (see below), whose sum is σ = 983205808. Its totient is φ = 451921680.

The previous prime is 679281719. The next prime is 679281739. The reversal of 679281723 is 327182976.

It is not a de Polignac number, because 679281723 - 2² = 679281719 is a prime.

It is a super-2 number, since 2×679281723² = 922847318403697458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679281763) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73108 + ... + 81873.

Almost surely, 2^679281723 is an apocalyptic number.

679281723 is a deficient number, since it is larger than the sum of its proper divisors (303924085).

679281723 is a wasteful number, since it uses less digits than its factorization.

679281723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155474 (or 155471 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 679281723 is about 26063.0336492128. The cubic root of 679281723 is about 879.0562036228.

The spelling of 679281723 in words is "six hundred seventy-nine million, two hundred eighty-one thousand, seven hundred twenty-three".