7721364 has 24 divisors (see below), whose sum is σ = 20590528. Its totient is φ = 2206080.

The previous prime is 7721359. The next prime is 7721369. The reversal of 7721364 is 4631277.

It is an interprime number because it is at equal distance from previous prime (7721359) and next prime (7721369).

It is a nude number because it is divisible by every one of its digits.

It is a d-powerful number, because it can be written as 7² + 7⁸ + 2¹³ + 1 + 3⁸ + 6⁸ + 4⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7721369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45877 + ... + 46044.

Almost surely, 2^7721364 is an apocalyptic number.

It is an amenable number.

7721364 is an abundant number, since it is smaller than the sum of its proper divisors (12869164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7721364 is a wasteful number, since it uses less digits than its factorization.

7721364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91935 (or 91933 counting only the distinct ones).

The product of its digits is 7056, while the sum is 30.

The square root of 7721364 is about 2778.7342442198. The cubic root of 7721364 is about 197.6505416345.

It can be divided in two parts, 77213 and 64, that added together give a palindrome (77277).

The spelling of 7721364 in words is "seven million, seven hundred twenty-one thousand, three hundred sixty-four".