623157 has 4 divisors (see below), whose sum is σ = 830880. Its totient is φ = 415436.

The previous prime is 623107. The next prime is 623171. The reversal of 623157 is 751326.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 623157 - 2⁸ = 622901 is a prime.

It is a D-number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 623157.

It is not an unprimeable number, because it can be changed into a prime (623107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103857 + ... + 103862.

It is an arithmetic number, because the mean of its divisors is an integer number (207720).

2⁶²³¹⁵⁷ is an apocalyptic number.

It is an amenable number.

623157 is a deficient number, since it is larger than the sum of its proper divisors (207723).

623157 is a wasteful number, since it uses less digits than its factorization.

623157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207722.

The product of its digits is 1260, while the sum is 24.

The square root of 623157 is about 789.4029389355. The cubic root of 623157 is about 85.4146749750.

It can be divided in two parts, 623 and 157, that added together give a triangular number (780 = T₃₉).

The spelling of 623157 in words is "six hundred twenty-three thousand, one hundred fifty-seven".