37108681 has 2 divisors, whose sum is σ = 37108682. Its totient is φ = 37108680.

The previous prime is 37108663. The next prime is 37108697. The reversal of 37108681 is 18680173.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34164025 + 2944656 = 5845^2 + 1716^2 .

It is a cyclic number.

It is not a de Polignac number, because 37108681 - 2¹³ = 37100489 is a prime.

It is a super-2 number, since 2×37108681² = 2754108411119522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (37108481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18554340 + 18554341.

It is an arithmetic number, because the mean of its divisors is an integer number (18554341).

Almost surely, 2^37108681 is an apocalyptic number.

It is an amenable number.

37108681 is a deficient number, since it is larger than the sum of its proper divisors (1).

37108681 is an equidigital number, since it uses as much as digits as its factorization.

37108681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 37108681 is about 6091.6895029212. The cubic root of 37108681 is about 333.5481267838.

The spelling of 37108681 in words is "thirty-seven million, one hundred eight thousand, six hundred eighty-one".