651959023 has 2 divisors, whose sum is σ = 651959024. Its totient is φ = 651959022.

The previous prime is 651959017. The next prime is 651959029. The reversal of 651959023 is 320959156.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (651959017) and next prime (651959029).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-651959023 is a prime.

It is a super-2 number, since 2×651959023² = 850101135342229058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (651959029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325979511 + 325979512.

It is an arithmetic number, because the mean of its divisors is an integer number (325979512).

Almost surely, 2^651959023 is an apocalyptic number.

651959023 is a deficient number, since it is larger than the sum of its proper divisors (1).

651959023 is an equidigital number, since it uses as much as digits as its factorization.

651959023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 651959023 is about 25533.4882654133. The cubic root of 651959023 is about 867.1084798769.

The spelling of 651959023 in words is "six hundred fifty-one million, nine hundred fifty-nine thousand, twenty-three".