40618623 has 8 divisors (see below), whose sum is σ = 54811008. Its totient is φ = 26752664.

The previous prime is 40618607. The next prime is 40618631. The reversal of 40618623 is 32681604.

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 40618623 - 2⁴ = 40618607 is a prime.

It is a super-2 number, since 2×40618623² = 3299745068832258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40618663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81315 + ... + 81812.

It is an arithmetic number, because the mean of its divisors is an integer number (6851376).

Almost surely, 2^40618623 is an apocalyptic number.

40618623 is a deficient number, since it is larger than the sum of its proper divisors (14192385).

40618623 is a wasteful number, since it uses less digits than its factorization.

40618623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163213.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 40618623 is about 6373.2741193205. The cubic root of 40618623 is about 343.7492285162.

The spelling of 40618623 in words is "forty million, six hundred eighteen thousand, six hundred twenty-three".