7213684 has 6 divisors (see below), whose sum is σ = 12623954. Its totient is φ = 3606840.

The previous prime is 7213681. The next prime is 7213699. The reversal of 7213684 is 4863127.

It can be written as a sum of positive squares in only one way, i.e., 6051600 + 1162084 = 2460^2 + 1078^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7213681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 901707 + ... + 901714.

Almost surely, 2^7213684 is an apocalyptic number.

It is an amenable number.

7213684 is a deficient number, since it is larger than the sum of its proper divisors (5410270).

7213684 is a wasteful number, since it uses less digits than its factorization.

7213684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803425 (or 1803423 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 7213684 is about 2685.8302254610. The cubic root of 7213684 is about 193.2201305848.

The spelling of 7213684 in words is "seven million, two hundred thirteen thousand, six hundred eighty-four".