651620323 has 8 divisors (see below), whose sum is σ = 670507200. Its totient is φ = 632903208.

The previous prime is 651620309. The next prime is 651620327. The reversal of 651620323 is 323026156.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-651620323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 651620291 and 651620300.

It is not an unprimeable number, because it can be changed into a prime (651620327) 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, 34633 + ... + 50026.

It is an arithmetic number, because the mean of its divisors is an integer number (83813400).

Almost surely, 2^651620323 is an apocalyptic number.

651620323 is a deficient number, since it is larger than the sum of its proper divisors (18886877).

651620323 is a wasteful number, since it uses less digits than its factorization.

651620323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84881.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 651620323 is about 25526.8549374967. The cubic root of 651620323 is about 866.9582963506.

Adding to 651620323 its reverse (323026156), we get a palindrome (974646479).

The spelling of 651620323 in words is "six hundred fifty-one million, six hundred twenty thousand, three hundred twenty-three".