7213937 has 2 divisors, whose sum is σ = 7213938. Its totient is φ = 7213936.

The previous prime is 7213919. The next prime is 7214023. The reversal of 7213937 is 7393127.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6739216 + 474721 = 2596^2 + 689^2 .

It is a cyclic number.

It is not a de Polignac number, because 7213937 - 2⁸ = 7213681 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (7213337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3606968 + 3606969.

It is an arithmetic number, because the mean of its divisors is an integer number (3606969).

Almost surely, 2^7213937 is an apocalyptic number.

It is an amenable number.

7213937 is a deficient number, since it is larger than the sum of its proper divisors (1).

7213937 is an equidigital number, since it uses as much as digits as its factorization.

7213937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7938, while the sum is 32.

The square root of 7213937 is about 2685.8773240787. The cubic root of 7213937 is about 193.2223894454. Note that the first 3 decimals are identical.

The spelling of 7213937 in words is "seven million, two hundred thirteen thousand, nine hundred thirty-seven".