551186680 has 64 divisors (see below), whose sum is σ = 1355551200. Its totient is φ = 200040960.

The previous prime is 551186677. The next prime is 551186683. The reversal of 551186680 is 86681155.

It is an interprime number because it is at equal distance from previous prime (551186677) and next prime (551186683).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551186683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321666 + ... + 323374.

Almost surely, 2^551186680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551186680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (677775600).

551186680 is an abundant number, since it is smaller than the sum of its proper divisors (804364520).

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

551186680 is a wasteful number, since it uses less digits than its factorization.

551186680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464 (or 2460 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 551186680 is about 23477.3652695527. The cubic root of 551186680 is about 819.9101031729.

The spelling of 551186680 in words is "five hundred fifty-one million, one hundred eighty-six thousand, six hundred eighty".