679554090 has 256 divisors, whose sum is σ = 2064061440. Its totient is φ = 158146560.

The previous prime is 679554079. The next prime is 679554149. The reversal of 679554090 is 90455976.

It is a happy number.

679554090 is a `hidden beast` number, since 6 + 7 + 9 + 554 + 0 + 90 = 666.

It is a super-2 number, since 2×679554090² = 923587522471456200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4328292 + ... + 4328448.

It is an arithmetic number, because the mean of its divisors is an integer number (8062740).

Almost surely, 2^679554090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679554090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1032030720).

679554090 is an abundant number, since it is smaller than the sum of its proper divisors (1384507350).

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

679554090 is a wasteful number, since it uses less digits than its factorization.

679554090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The square root of 679554090 is about 26068.2582847416. The cubic root of 679554090 is about 879.1736776642.

The spelling of 679554090 in words is "six hundred seventy-nine million, five hundred fifty-four thousand, ninety".