651620152 has 8 divisors (see below), whose sum is σ = 1221787800. Its totient is φ = 325810072.

The previous prime is 651620129. The next prime is 651620191. The reversal of 651620152 is 251026156.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 651620152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40726252 + ... + 40726267.

It is an arithmetic number, because the mean of its divisors is an integer number (152723475).

Almost surely, 2^651620152 is an apocalyptic number.

It is an amenable number.

651620152 is a deficient number, since it is larger than the sum of its proper divisors (570167648).

651620152 is a wasteful number, since it uses less digits than its factorization.

651620152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81452525 (or 81452521 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 651620152 is about 25526.8515880827. The cubic root of 651620152 is about 866.9582205141.

The spelling of 651620152 in words is "six hundred fifty-one million, six hundred twenty thousand, one hundred fifty-two".