623920345 has 8 divisors (see below), whose sum is σ = 749218176. Its totient is φ = 498793776.

The previous prime is 623920343. The next prime is 623920387. The reversal of 623920345 is 543029326.

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

It is a cyclic number.

It is not a de Polignac number, because 623920345 - 2¹ = 623920343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 623920345.

It is not an unprimeable number, because it can be changed into a prime (623920343) 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, 34657 + ... + 49486.

It is an arithmetic number, because the mean of its divisors is an integer number (93652272).

Almost surely, 2^623920345 is an apocalyptic number.

It is an amenable number.

623920345 is a deficient number, since it is larger than the sum of its proper divisors (125297831).

623920345 is a wasteful number, since it uses less digits than its factorization.

623920345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85631.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 623920345 is about 24978.3975666975. The cubic root of 623920345 is about 854.4953738278.

The spelling of 623920345 in words is "six hundred twenty-three million, nine hundred twenty thousand, three hundred forty-five".