37461661 has 4 divisors (see below), whose sum is σ = 37544092. Its totient is φ = 37379232.

The previous prime is 37461653. The next prime is 37461689. The reversal of 37461661 is 16616473.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19980900 + 17480761 = 4470^2 + 4181^2 .

It is a cyclic number.

It is not a de Polignac number, because 37461661 - 2³ = 37461653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37461601) 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, 40530 + ... + 41443.

It is an arithmetic number, because the mean of its divisors is an integer number (9386023).

Almost surely, 2^37461661 is an apocalyptic number.

It is an amenable number.

37461661 is a deficient number, since it is larger than the sum of its proper divisors (82431).

37461661 is an equidigital number, since it uses as much as digits as its factorization.

37461661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82430.

The product of its digits is 18144, while the sum is 34.

The square root of 37461661 is about 6120.5931902063. The cubic root of 37461661 is about 334.6023677461.

The spelling of 37461661 in words is "thirty-seven million, four hundred sixty-one thousand, six hundred sixty-one".