623996755 has 8 divisors (see below), whose sum is σ = 761071824. Its totient is φ = 491013600.

The previous prime is 623996731. The next prime is 623996761. The reversal of 623996755 is 557699326.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-623996755 is a prime.

It is a super-3 number, since 3×623996755³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

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, 1022641 + ... + 1023250.

It is an arithmetic number, because the mean of its divisors is an integer number (95133978).

Almost surely, 2^623996755 is an apocalyptic number.

623996755 is a deficient number, since it is larger than the sum of its proper divisors (137075069).

623996755 is a wasteful number, since it uses less digits than its factorization.

623996755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045957.

The product of its digits is 3061800, while the sum is 52.

The square root of 623996755 is about 24979.9270415268. The cubic root of 623996755 is about 854.5302550574.

The spelling of 623996755 in words is "six hundred twenty-three million, nine hundred ninety-six thousand, seven hundred fifty-five".