621623734 has 8 divisors (see below), whose sum is σ = 987284808. Its totient is φ = 292528800.

The previous prime is 621623719. The next prime is 621623767. The reversal of 621623734 is 437326126.

621623734 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 18283051 = 621623734 / (6 + 2 + 1 + 6 + 2 + 3 + 7 + 3 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 621623734.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9141492 + ... + 9141559.

It is an arithmetic number, because the mean of its divisors is an integer number (123410601).

Almost surely, 2^621623734 is an apocalyptic number.

621623734 is a deficient number, since it is larger than the sum of its proper divisors (365661074).

621623734 is a wasteful number, since it uses less digits than its factorization.

621623734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18283070.

The product of its digits is 36288, while the sum is 34.

The square root of 621623734 is about 24932.3832394739. The cubic root of 621623734 is about 853.4456371089.

The spelling of 621623734 in words is "six hundred twenty-one million, six hundred twenty-three thousand, seven hundred thirty-four".