36621386 has 4 divisors (see below), whose sum is σ = 54932082. Its totient is φ = 18310692.

The previous prime is 36621331. The next prime is 36621397. The reversal of 36621386 is 68312663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68312663 = 101 ⋅676363.

It can be written as a sum of positive squares in only one way, i.e., 19140625 + 17480761 = 4375^2 + 4181^2 .

It is a super-2 number, since 2×36621386² = 2682251825121992, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9155345 + ... + 9155348.

Almost surely, 2^36621386 is an apocalyptic number.

36621386 is a deficient number, since it is larger than the sum of its proper divisors (18310696).

36621386 is a wasteful number, since it uses less digits than its factorization.

36621386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18310695.

The product of its digits is 31104, while the sum is 35.

The square root of 36621386 is about 6051.5606251611. The cubic root of 36621386 is about 332.0816862435.

The spelling of 36621386 in words is "thirty-six million, six hundred twenty-one thousand, three hundred eighty-six".