623423370 has 16 divisors (see below), whose sum is σ = 1496216160. Its totient is φ = 166246224.

The previous prime is 623423363. The next prime is 623423393. The reversal of 623423370 is 73324326.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 20780779 = 623423370 / (6 + 2 + 3 + 4 + 2 + 3 + 3 + 7 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10390360 + ... + 10390419.

It is an arithmetic number, because the mean of its divisors is an integer number (93513510).

Almost surely, 2^623423370 is an apocalyptic number.

623423370 is an abundant number, since it is smaller than the sum of its proper divisors (872792790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

623423370 is a wasteful number, since it uses less digits than its factorization.

623423370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20780789.

The product of its (nonzero) digits is 18144, while the sum is 30.

The square root of 623423370 is about 24968.4474887807. The cubic root of 623423370 is about 854.2684347937.

Adding to 623423370 its reverse (73324326), we get a palindrome (696747696).

The spelling of 623423370 in words is "six hundred twenty-three million, four hundred twenty-three thousand, three hundred seventy".