36775821 has 16 divisors (see below), whose sum is σ = 50195520. Its totient is φ = 23942400.

The previous prime is 36775813. The next prime is 36775829. The reversal of 36775821 is 12857763.

It is an interprime number because it is at equal distance from previous prime (36775813) and next prime (36775829).

It is not a de Polignac number, because 36775821 - 2³ = 36775813 is a prime.

It is a super-2 number, since 2×36775821² = 2704922020448082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 36775821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36775829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30021 + ... + 31221.

It is an arithmetic number, because the mean of its divisors is an integer number (3137220).

Almost surely, 2^36775821 is an apocalyptic number.

It is an amenable number.

36775821 is a deficient number, since it is larger than the sum of its proper divisors (13419699).

36775821 is a wasteful number, since it uses less digits than its factorization.

36775821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436.

The product of its digits is 70560, while the sum is 39.

The square root of 36775821 is about 6064.3071327234. The cubic root of 36775821 is about 332.5478356564.

The spelling of 36775821 in words is "thirty-six million, seven hundred seventy-five thousand, eight hundred twenty-one".