651216263 has 8 divisors (see below), whose sum is σ = 692794800. Its totient is φ = 610001280.

The previous prime is 651216253. The next prime is 651216277. The reversal of 651216263 is 362612156.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 651216263 - 2¹⁰ = 651215239 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 (651216253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87188 + ... + 94361.

It is an arithmetic number, because the mean of its divisors is an integer number (86599350).

Almost surely, 2^651216263 is an apocalyptic number.

651216263 is a deficient number, since it is larger than the sum of its proper divisors (41578537).

651216263 is a wasteful number, since it uses less digits than its factorization.

651216263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181777.

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

The square root of 651216263 is about 25518.9393000571. The cubic root of 651216263 is about 866.7790633485.

The spelling of 651216263 in words is "six hundred fifty-one million, two hundred sixteen thousand, two hundred sixty-three".