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654252480 = 263257172383

654252480 has 672 divisors, whose sum is σ = 2875751424. Its totient is φ = 133005312.

The previous prime is 654252449. The next prime is 654252493. The reversal of 654252480 is 84252456.

It is a happy number.

654252480 is a `hidden beast` number, since 6 + 54 + 2 + 524 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7882519 + ... + 7882601.

It is an arithmetic number, because the mean of its divisors is an integer number (4279392).

Almost surely, 2654252480 is an apocalyptic number.

654252480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654252480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1437875712).

654252480 is an abundant number, since it is smaller than the sum of its proper divisors (2221498944).

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

654252480 is a wasteful number, since it uses less digits than its factorization.

654252480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The square root of 654252480 is about 25578.3596033835. The cubic root of 654252480 is about 868.1240593701.

The spelling of 654252480 in words is "six hundred fifty-four million, two hundred fifty-two thousand, four hundred eighty".