37872865 has 8 divisors (see below), whose sum is σ = 45507240. Its totient is φ = 30258432.

The previous prime is 37872853. The next prime is 37872883. The reversal of 37872865 is 56827873.

It can be written as a sum of positive squares in 4 ways, for example, as 13456 + 37859409 = 116^2 + 6153^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 37872865 - 2¹⁵ = 37840097 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424 + ... + 8713.

It is an arithmetic number, because the mean of its divisors is an integer number (5688405).

Almost surely, 2^37872865 is an apocalyptic number.

It is an amenable number.

37872865 is a deficient number, since it is larger than the sum of its proper divisors (7634375).

37872865 is an equidigital number, since it uses as much as digits as its factorization.

37872865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9971.

The product of its digits is 564480, while the sum is 46.

The square root of 37872865 is about 6154.0933532081. The cubic root of 37872865 is about 335.8221877820.

The spelling of 37872865 in words is "thirty-seven million, eight hundred seventy-two thousand, eight hundred sixty-five".