37668481 has 4 divisors (see below), whose sum is σ = 39884292. Its totient is φ = 35452672.

The previous prime is 37668443. The next prime is 37668487. The reversal of 37668481 is 18486673.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18486673 = 83 ⋅222731.

It can be written as a sum of positive squares in 2 ways, for example, as 34574400 + 3094081 = 5880^2 + 1759^2 .

It is a cyclic number.

It is not a de Polignac number, because 37668481 - 2¹³ = 37660289 is a prime.

It is a super-2 number, since 2×37668481² = 2837828921694722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37668487) 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, 1107880 + ... + 1107913.

It is an arithmetic number, because the mean of its divisors is an integer number (9971073).

Almost surely, 2^37668481 is an apocalyptic number.

It is an amenable number.

37668481 is a deficient number, since it is larger than the sum of its proper divisors (2215811).

37668481 is a wasteful number, since it uses less digits than its factorization.

37668481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2215810.

The product of its digits is 193536, while the sum is 43.

The square root of 37668481 is about 6137.4653563177. The cubic root of 37668481 is about 335.2170005646.

The spelling of 37668481 in words is "thirty-seven million, six hundred sixty-eight thousand, four hundred eighty-one".