37143666 has 72 divisors (see below), whose sum is σ = 97740864. Its totient is φ = 10145520.

The previous prime is 37143647. The next prime is 37143697. The reversal of 37143666 is 66634173.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 37143666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 19371 + ... + 21201.

It is an arithmetic number, because the mean of its divisors is an integer number (1357512).

Almost surely, 2^37143666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 37143666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48870432).

37143666 is an abundant number, since it is smaller than the sum of its proper divisors (60597198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

37143666 is a wasteful number, since it uses less digits than its factorization.

37143666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876 (or 1866 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 37143666 is about 6094.5603615027. The cubic root of 37143666 is about 333.6529137294.

The spelling of 37143666 in words is "thirty-seven million, one hundred forty-three thousand, six hundred sixty-six".