36609661 has 8 divisors (see below), whose sum is σ = 40088448. Its totient is φ = 33156000.

The previous prime is 36609649. The next prime is 36609709. The reversal of 36609661 is 16690663.

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 36609661 - 2⁷ = 36609533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36609661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36609611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3160 + ... + 9121.

It is an arithmetic number, because the mean of its divisors is an integer number (5011056).

Almost surely, 2^36609661 is an apocalyptic number.

It is an amenable number.

36609661 is a deficient number, since it is larger than the sum of its proper divisors (3478787).

36609661 is a wasteful number, since it uses less digits than its factorization.

36609661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12563.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 36609661 is about 6050.5917892385. The cubic root of 36609661 is about 332.0462418050.

The spelling of 36609661 in words is "thirty-six million, six hundred nine thousand, six hundred sixty-one".