7821364 has 12 divisors (see below), whose sum is σ = 13978944. Its totient is φ = 3827384.

The previous prime is 7821361. The next prime is 7821367. The reversal of 7821364 is 4631287.

It is an interprime number because it is at equal distance from previous prime (7821361) and next prime (7821367).

It is a super-2 number, since 2×7821364² = 122347469640992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7821361) 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, 20614 + ... + 20989.

It is an arithmetic number, because the mean of its divisors is an integer number (1164912).

Almost surely, 2^7821364 is an apocalyptic number.

It is an amenable number.

7821364 is a deficient number, since it is larger than the sum of its proper divisors (6157580).

7821364 is a wasteful number, since it uses less digits than its factorization.

7821364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41654 (or 41652 counting only the distinct ones).

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

The square root of 7821364 is about 2796.6701628901. The cubic root of 7821364 is about 198.5001469881.

The spelling of 7821364 in words is "seven million, eight hundred twenty-one thousand, three hundred sixty-four".