651343089 has 4 divisors (see below), whose sum is σ = 868457456. Its totient is φ = 434228724.

The previous prime is 651343087. The next prime is 651343093. The reversal of 651343089 is 980343156.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 651343089 - 2¹ = 651343087 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (651343087) 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, 108557179 + ... + 108557184.

It is an arithmetic number, because the mean of its divisors is an integer number (217114364).

Almost surely, 2^651343089 is an apocalyptic number.

It is an amenable number.

651343089 is a deficient number, since it is larger than the sum of its proper divisors (217114367).

651343089 is a wasteful number, since it uses less digits than its factorization.

651343089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217114366.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 651343089 is about 25521.4241177878. The cubic root of 651343089 is about 866.8353288280.

The spelling of 651343089 in words is "six hundred fifty-one million, three hundred forty-three thousand, eighty-nine".