623155 has 8 divisors (see below), whose sum is σ = 805392. Its totient is φ = 460128.

The previous prime is 623107. The next prime is 623171. The reversal of 623155 is 551326.

623155 = 48² + 49² + ... + 125².

It is a happy number.

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 623155 - 2¹³ = 614963 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 623155.

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, 4729 + ... + 4858.

It is an arithmetic number, because the mean of its divisors is an integer number (100674).

2⁶²³¹⁵⁵ is an apocalyptic number.

623155 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

623155 is a deficient number, since it is larger than the sum of its proper divisors (182237).

623155 is a wasteful number, since it uses less digits than its factorization.

623155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9605.

The product of its digits is 900, while the sum is 22.

The square root of 623155 is about 789.4016721543. The cubic root of 623155 is about 85.4145835965.

The spelling of 623155 in words is "six hundred twenty-three thousand, one hundred fifty-five".