35736561 has 24 divisors (see below), whose sum is σ = 60592064. Its totient is φ = 19867680.

The previous prime is 35736557. The next prime is 35736577. The reversal of 35736561 is 16563753.

It is a happy number.

It is not a de Polignac number, because 35736561 - 2² = 35736557 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (35736541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5335 + ... + 9996.

Almost surely, 2^35736561 is an apocalyptic number.

It is an amenable number.

35736561 is a deficient number, since it is larger than the sum of its proper divisors (24855503).

35736561 is a wasteful number, since it uses less digits than its factorization.

35736561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15381 (or 15378 counting only the distinct ones).

The product of its digits is 56700, while the sum is 36.

The square root of 35736561 is about 5978.0064402776. The cubic root of 35736561 is about 329.3853296320.

The spelling of 35736561 in words is "thirty-five million, seven hundred thirty-six thousand, five hundred sixty-one".