651059641 has 2 divisors, whose sum is σ = 651059642. Its totient is φ = 651059640.

The previous prime is 651059609. The next prime is 651059671. The reversal of 651059641 is 146950156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 354531241 + 296528400 = 18829^2 + 17220^2 .

It is a cyclic number.

It is not a de Polignac number, because 651059641 - 2⁵ = 651059609 is a prime.

It is a super-2 number, since 2×651059641² = 847757312278097762, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 651059641.

It is not a weakly prime, because it can be changed into another prime (651059671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325529820 + 325529821.

It is an arithmetic number, because the mean of its divisors is an integer number (325529821).

Almost surely, 2^651059641 is an apocalyptic number.

It is an amenable number.

651059641 is a deficient number, since it is larger than the sum of its proper divisors (1).

651059641 is an equidigital number, since it uses as much as digits as its factorization.

651059641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 651059641 is about 25515.8703751214. The cubic root of 651059641 is about 866.7095689972.

The spelling of 651059641 in words is "six hundred fifty-one million, fifty-nine thousand, six hundred forty-one".