623455505 has 8 divisors (see below), whose sum is σ = 748440000. Its totient is φ = 498568816.

The previous prime is 623455499. The next prime is 623455507. The reversal of 623455505 is 505554326.

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 623455505 - 2¹⁶ = 623389969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (623455507) 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, 9605 + ... + 36594.

It is an arithmetic number, because the mean of its divisors is an integer number (93555000).

Almost surely, 2^623455505 is an apocalyptic number.

It is an amenable number.

623455505 is a deficient number, since it is larger than the sum of its proper divisors (124984495).

623455505 is a wasteful number, since it uses less digits than its factorization.

623455505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48903.

The product of its (nonzero) digits is 90000, while the sum is 35.

The square root of 623455505 is about 24969.0909926653. The cubic root of 623455505 is about 854.2831125904.

The spelling of 623455505 in words is "six hundred twenty-three million, four hundred fifty-five thousand, five hundred five".