623220394 has 16 divisors (see below), whose sum is σ = 945584640. Its totient is φ = 308046240.

The previous prime is 623220379. The next prime is 623220487. The reversal of 623220394 is 493022326.

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, 57262 + ... + 67270.

It is an arithmetic number, because the mean of its divisors is an integer number (59099040).

Almost surely, 2^623220394 is an apocalyptic number.

623220394 is a deficient number, since it is larger than the sum of its proper divisors (322364246).

623220394 is a wasteful number, since it uses less digits than its factorization.

623220394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10365.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 623220394 is about 24964.3825078851. The cubic root of 623220394 is about 854.1757129935.

The spelling of 623220394 in words is "six hundred twenty-three million, two hundred twenty thousand, three hundred ninety-four".