36538669 has 4 divisors (see below), whose sum is σ = 36900540. Its totient is φ = 36176800.

The previous prime is 36538657. The next prime is 36538673. The reversal of 36538669 is 96683563.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96683563 = 101 ⋅957263.

It can be written as a sum of positive squares in 2 ways, for example, as 34363044 + 2175625 = 5862^2 + 1475^2 .

It is a cyclic number.

It is not a de Polignac number, because 36538669 - 2⁹ = 36538157 is a prime.

It is a super-2 number, since 2×36538669² = 2670148664583122, 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 (36538609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180784 + ... + 180985.

It is an arithmetic number, because the mean of its divisors is an integer number (9225135).

Almost surely, 2^36538669 is an apocalyptic number.

It is an amenable number.

36538669 is a deficient number, since it is larger than the sum of its proper divisors (361871).

36538669 is a wasteful number, since it uses less digits than its factorization.

36538669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361870.

The product of its digits is 699840, while the sum is 46.

The square root of 36538669 is about 6044.7224088456. The cubic root of 36538669 is about 331.8314726282.

The spelling of 36538669 in words is "thirty-six million, five hundred thirty-eight thousand, six hundred sixty-nine".