37672681 has 2 divisors, whose sum is σ = 37672682. Its totient is φ = 37672680.

The previous prime is 37672673. The next prime is 37672717. The reversal of 37672681 is 18627673.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24167056 + 13505625 = 4916^2 + 3675^2 .

It is a cyclic number.

It is not a de Polignac number, because 37672681 - 2³ = 37672673 is a prime.

It is a super-2 number, since 2×37672681² = 2838461787455522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (37672631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18836340 + 18836341.

It is an arithmetic number, because the mean of its divisors is an integer number (18836341).

Almost surely, 2^37672681 is an apocalyptic number.

It is an amenable number.

37672681 is a deficient number, since it is larger than the sum of its proper divisors (1).

37672681 is an equidigital number, since it uses as much as digits as its factorization.

37672681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 40.

The square root of 37672681 is about 6137.8075075714. The cubic root of 37672681 is about 335.2294588944.

The spelling of 37672681 in words is "thirty-seven million, six hundred seventy-two thousand, six hundred eighty-one".