973398637 has 2 divisors, whose sum is σ = 973398638. Its totient is φ = 973398636.

The previous prime is 973398619. The next prime is 973398641. The reversal of 973398637 is 736893379.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 912885796 + 60512841 = 30214^2 + 7779^2 .

It is an emirp because it is prime and its reverse (736893379) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-973398637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (973398677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486699318 + 486699319.

It is an arithmetic number, because the mean of its divisors is an integer number (486699319).

Almost surely, 2^973398637 is an apocalyptic number.

It is an amenable number.

973398637 is a deficient number, since it is larger than the sum of its proper divisors (1).

973398637 is an equidigital number, since it uses as much as digits as its factorization.

973398637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5143824, while the sum is 55.

The square root of 973398637 is about 31199.3371243685. The cubic root of 973398637 is about 991.0530701733.

The spelling of 973398637 in words is "nine hundred seventy-three million, three hundred ninety-eight thousand, six hundred thirty-seven".