651662880 has 192 divisors, whose sum is σ = 2267854848. Its totient is φ = 155970560.

The previous prime is 651662867. The next prime is 651662881. The reversal of 651662880 is 88266156.

It is not an unprimeable number, because it can be changed into a prime (651662881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 437497 + ... + 438983.

It is an arithmetic number, because the mean of its divisors is an integer number (11811744).

Almost surely, 2^651662880 is an apocalyptic number.

651662880 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 651662880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1133927424).

651662880 is an abundant number, since it is smaller than the sum of its proper divisors (1616191968).

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

651662880 is a wasteful number, since it uses less digits than its factorization.

651662880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599 (or 1591 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 651662880 is about 25527.6884970026. The cubic root of 651662880 is about 866.9771694785.

It can be divided in two parts, 6516 and 62880, that added together give a palindrome (69396).

The spelling of 651662880 in words is "six hundred fifty-one million, six hundred sixty-two thousand, eight hundred eighty".