654136980 has 48 divisors (see below), whose sum is σ = 2093239680. Its totient is φ = 149516928.

The previous prime is 654136979. The next prime is 654137009. The reversal of 654136980 is 89631456.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 778315 + ... + 779154.

It is an arithmetic number, because the mean of its divisors is an integer number (43609160).

Almost surely, 2^654136980 is an apocalyptic number.

654136980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

654136980 is an abundant number, since it is smaller than the sum of its proper divisors (1439102700).

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

654136980 is a wasteful number, since it uses less digits than its factorization.

654136980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557488 (or 1557486 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 654136980 is about 25576.1017358002. The cubic root of 654136980 is about 868.0729709229.

The spelling of 654136980 in words is "six hundred fifty-four million, one hundred thirty-six thousand, nine hundred eighty".