36621405 has 48 divisors (see below), whose sum is σ = 67931136. Its totient is φ = 18205440.

The previous prime is 36621397. The next prime is 36621407. The reversal of 36621405 is 50412663.

36621405 is a `hidden beast` number, since 36 + 621 + 4 + 0 + 5 = 666.

It is not a de Polignac number, because 36621405 - 2³ = 36621397 is a prime.

It is a super-2 number, since 2×36621405² = 2682254608348050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36621407) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42004 + ... + 42866.

It is an arithmetic number, because the mean of its divisors is an integer number (1415232).

Almost surely, 2^36621405 is an apocalyptic number.

It is an amenable number.

36621405 is a deficient number, since it is larger than the sum of its proper divisors (31309731).

36621405 is a wasteful number, since it uses less digits than its factorization.

36621405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938 (or 935 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 36621405 is about 6051.5621950039. The cubic root of 36621405 is about 332.0817436740.

The spelling of 36621405 in words is "thirty-six million, six hundred twenty-one thousand, four hundred five".