3697144561 has 4 divisors (see below), whose sum is σ = 4033248624. Its totient is φ = 3361040500.

The previous prime is 3697144543. The next prime is 3697144567. The reversal of 3697144561 is 1654417963.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3697144561 - 2⁹ = 3697144049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3697144567) 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, 168052015 + ... + 168052036.

It is an arithmetic number, because the mean of its divisors is an integer number (1008312156).

Almost surely, 2^3697144561 is an apocalyptic number.

It is an amenable number.

3697144561 is a deficient number, since it is larger than the sum of its proper divisors (336104063).

3697144561 is a wasteful number, since it uses less digits than its factorization.

3697144561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336104062.

The product of its digits is 544320, while the sum is 46.

The square root of 3697144561 is about 60804.1492087505. The cubic root of 3697144561 is about 1546.2823928653.

The spelling of 3697144561 in words is "three billion, six hundred ninety-seven million, one hundred forty-four thousand, five hundred sixty-one".