122578623 has 8 divisors (see below), whose sum is σ = 181598000. Its totient is φ = 81719064.

The previous prime is 122578597. The next prime is 122578639. The reversal of 122578623 is 326875221.

122578623 is a `hidden beast` number, since 1 + 2 + 25 + 7 + 8 + 623 = 666.

It is not a de Polignac number, because 122578623 - 2⁵ = 122578591 is a prime.

It is a super-2 number, since 2×122578623² = 30051037633152258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122578723) 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, 2269948 + ... + 2270001.

It is an arithmetic number, because the mean of its divisors is an integer number (22699750).

Almost surely, 2^122578623 is an apocalyptic number.

122578623 is a deficient number, since it is larger than the sum of its proper divisors (59019377).

122578623 is an equidigital number, since it uses as much as digits as its factorization.

122578623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4539958 (or 4539952 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 122578623 is about 11071.5230659562. The cubic root of 122578623 is about 496.7504235926.

It can be divided in two parts, 122578 and 623, that added together give a square (123201 = 351²).

The spelling of 122578623 in words is "one hundred twenty-two million, five hundred seventy-eight thousand, six hundred twenty-three".