651206652 has 12 divisors (see below), whose sum is σ = 1519482216. Its totient is φ = 217068880.

The previous prime is 651206587. The next prime is 651206671. The reversal of 651206652 is 256602156.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27133599 + ... + 27133622.

It is an arithmetic number, because the mean of its divisors is an integer number (126623518).

Almost surely, 2^651206652 is an apocalyptic number.

It is an amenable number.

651206652 is an abundant number, since it is smaller than the sum of its proper divisors (868275564).

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

651206652 is a wasteful number, since it uses less digits than its factorization.

651206652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54267228 (or 54267226 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 651206652 is about 25518.7509882439. The cubic root of 651206652 is about 866.7747991969.

The spelling of 651206652 in words is "six hundred fifty-one million, two hundred six thousand, six hundred fifty-two".