37970197 has 4 divisors (see below), whose sum is σ = 40203756. Its totient is φ = 35736640.

The previous prime is 37970183. The next prime is 37970221. The reversal of 37970197 is 79107973.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19660356 + 18309841 = 4434^2 + 4279^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37970197 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 (37970137) 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, 1116754 + ... + 1116787.

It is an arithmetic number, because the mean of its divisors is an integer number (10050939).

Almost surely, 2^37970197 is an apocalyptic number.

It is an amenable number.

37970197 is a deficient number, since it is larger than the sum of its proper divisors (2233559).

37970197 is a wasteful number, since it uses less digits than its factorization.

37970197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233558.

The product of its (nonzero) digits is 83349, while the sum is 43.

The square root of 37970197 is about 6161.9961863020. The cubic root of 37970197 is about 336.1096256282.

The spelling of 37970197 in words is "thirty-seven million, nine hundred seventy thousand, one hundred ninety-seven".