623660355 has 24 divisors (see below), whose sum is σ = 1091722320. Its totient is φ = 329323200.

The previous prime is 623660353. The next prime is 623660357. The reversal of 623660355 is 553066326.

It is an interprime number because it is at equal distance from previous prime (623660353) and next prime (623660357).

It is not a de Polignac number, because 623660355 - 2¹ = 623660353 is a prime.

It is a super-3 number, since 3×623660355³ (a number of 27 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (623660353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64065 + ... + 73154.

It is an arithmetic number, because the mean of its divisors is an integer number (45488430).

Almost surely, 2^623660355 is an apocalyptic number.

623660355 is a deficient number, since it is larger than the sum of its proper divisors (468061965).

623660355 is a wasteful number, since it uses less digits than its factorization.

623660355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137331 (or 137328 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

The square root of 623660355 is about 24973.1927274027. The cubic root of 623660355 is about 854.3766668382.

The spelling of 623660355 in words is "six hundred twenty-three million, six hundred sixty thousand, three hundred fifty-five".