651851040 has 96 divisors (see below), whose sum is σ = 2084080320. Its totient is φ = 171224064.

The previous prime is 651851029. The next prime is 651851051. The reversal of 651851040 is 40158156.

It is an interprime number because it is at equal distance from previous prime (651851029) and next prime (651851051).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 651850989 and 651851007.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22026 + ... + 42294.

It is an arithmetic number, because the mean of its divisors is an integer number (21709170).

Almost surely, 2^651851040 is an apocalyptic number.

651851040 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 651851040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1042040160).

651851040 is an abundant number, since it is smaller than the sum of its proper divisors (1432229280).

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

651851040 is a wasteful number, since it uses less digits than its factorization.

651851040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20354 (or 20346 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 651851040 is about 25531.3736410715. The cubic root of 651851040 is about 867.0606046058.

The spelling of 651851040 in words is "six hundred fifty-one million, eight hundred fifty-one thousand, forty".