623153221 has 8 divisors (see below), whose sum is σ = 634593600. Its totient is φ = 611742240.

The previous prime is 623153159. The next prime is 623153243. The reversal of 623153221 is 122351326.

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 623153221 - 2¹⁵ = 623120453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623153261) 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, 37960 + ... + 51838.

It is an arithmetic number, because the mean of its divisors is an integer number (79324200).

Almost surely, 2^623153221 is an apocalyptic number.

It is an amenable number.

623153221 is a deficient number, since it is larger than the sum of its proper divisors (11440379).

623153221 is a wasteful number, since it uses less digits than its factorization.

623153221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14699.

The product of its digits is 2160, while the sum is 25.

The square root of 623153221 is about 24963.0370948729. The cubic root of 623153221 is about 854.1450231512.

It can be divided in two parts, 62315 and 3221, that added together give a 16-th power (65536 = 2¹⁶).

The spelling of 623153221 in words is "six hundred twenty-three million, one hundred fifty-three thousand, two hundred twenty-one".