651701952 has 168 divisors, whose sum is σ = 2067184080. Its totient is φ = 194641920.

The previous prime is 651701927. The next prime is 651701959. The reversal of 651701952 is 259107156.

It is a super-2 number, since 2×651701952² = 849430868481220608, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (651701959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 461824 + ... + 463232.

Almost surely, 2^651701952 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 651701952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1033592040).

651701952 is an abundant number, since it is smaller than the sum of its proper divisors (1415482128).

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

651701952 is a wasteful number, since it uses less digits than its factorization.

651701952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511 (or 1498 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The square root of 651701952 is about 25528.4537722127. The cubic root of 651701952 is about 866.9944963592.

It can be divided in two parts, 651701 and 952, that added together give a triangular number (652653 = T₁₁₄₂).

The spelling of 651701952 in words is "six hundred fifty-one million, seven hundred one thousand, nine hundred fifty-two".