651350645 has 16 divisors (see below), whose sum is σ = 860231232. Its totient is φ = 469512960.

The previous prime is 651350633. The next prime is 651350653. The reversal of 651350645 is 546053156.

It is not a de Polignac number, because 651350645 - 2⁸ = 651350389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46187 + ... + 58616.

It is an arithmetic number, because the mean of its divisors is an integer number (53764452).

Almost surely, 2^651350645 is an apocalyptic number.

It is an amenable number.

651350645 is a deficient number, since it is larger than the sum of its proper divisors (208880587).

651350645 is a wasteful number, since it uses less digits than its factorization.

651350645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104932.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 651350645 is about 25521.5721498500. The cubic root of 651350645 is about 866.8386807647.

The spelling of 651350645 in words is "six hundred fifty-one million, three hundred fifty thousand, six hundred forty-five".