651122663 has 4 divisors (see below), whose sum is σ = 679432368. Its totient is φ = 622812960.

The previous prime is 651122657. The next prime is 651122671. The reversal of 651122663 is 366221156.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-651122663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651122603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14154818 + ... + 14154863.

It is an arithmetic number, because the mean of its divisors is an integer number (169858092).

Almost surely, 2^651122663 is an apocalyptic number.

651122663 is a deficient number, since it is larger than the sum of its proper divisors (28309705).

651122663 is a wasteful number, since it uses less digits than its factorization.

651122663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28309704.

The product of its digits is 12960, while the sum is 32.

The square root of 651122663 is about 25517.1053021302. The cubic root of 651122663 is about 866.7375336692.

The spelling of 651122663 in words is "six hundred fifty-one million, one hundred twenty-two thousand, six hundred sixty-three".