37668745 has 4 divisors (see below), whose sum is σ = 45202500. Its totient is φ = 30134992.

The previous prime is 37668721. The next prime is 37668749. The reversal of 37668745 is 54786673.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54786673 = 761 ⋅71993.

It can be written as a sum of positive squares in 2 ways, for example, as 8982009 + 28686736 = 2997^2 + 5356^2 .

It is a cyclic number.

It is not a de Polignac number, because 37668745 - 2⁵ = 37668713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 37668695 and 37668704.

It is not an unprimeable number, because it can be changed into a prime (37668749) 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, 3766870 + ... + 3766879.

It is an arithmetic number, because the mean of its divisors is an integer number (11300625).

Almost surely, 2^37668745 is an apocalyptic number.

It is an amenable number.

37668745 is a deficient number, since it is larger than the sum of its proper divisors (7533755).

37668745 is an equidigital number, since it uses as much as digits as its factorization.

37668745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7533754.

The product of its digits is 846720, while the sum is 46.

The square root of 37668745 is about 6137.4868635297. The cubic root of 37668745 is about 335.2177836869.

The spelling of 37668745 in words is "thirty-seven million, six hundred sixty-eight thousand, seven hundred forty-five".