679280121 has 24 divisors (see below), whose sum is σ = 1089713760. Its totient is φ = 418015728.

The previous prime is 679280117. The next prime is 679280167. The reversal of 679280121 is 121082976.

It is not a de Polignac number, because 679280121 - 2² = 679280117 is a prime.

It is a super-2 number, since 2×679280121² = 922842965571549282, which contains 22 as substring.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (679285121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69871 + ... + 78996.

It is an arithmetic number, because the mean of its divisors is an integer number (45404740).

Almost surely, 2^679280121 is an apocalyptic number.

It is an amenable number.

679280121 is a deficient number, since it is larger than the sum of its proper divisors (410433639).

679280121 is a wasteful number, since it uses less digits than its factorization.

679280121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148902 (or 148883 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 679280121 is about 26063.0029160110. The cubic root of 679280121 is about 879.0555125746.

The spelling of 679280121 in words is "six hundred seventy-nine million, two hundred eighty thousand, one hundred twenty-one".