37660397 has 4 divisors (see below), whose sum is σ = 37711296. Its totient is φ = 37609500.

The previous prime is 37660391. The next prime is 37660409. The reversal of 37660397 is 79306673.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79306673 = 6961 ⋅11393.

It is a cyclic number.

It is not a de Polignac number, because 37660397 - 2⁶ = 37660333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37660391) 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, 24323 + ... + 25824.

It is an arithmetic number, because the mean of its divisors is an integer number (9427824).

Almost surely, 2^37660397 is an apocalyptic number.

It is an amenable number.

37660397 is a deficient number, since it is larger than the sum of its proper divisors (50899).

37660397 is an equidigital number, since it uses as much as digits as its factorization.

37660397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50898.

The product of its (nonzero) digits is 142884, while the sum is 41.

The square root of 37660397 is about 6136.8067429242. The cubic root of 37660397 is about 335.1930186391.

The spelling of 37660397 in words is "thirty-seven million, six hundred sixty thousand, three hundred ninety-seven".