7245864 has 48 divisors (see below), whose sum is σ = 19780020. Its totient is φ = 2396160.

The previous prime is 7245863. The next prime is 7245869. The reversal of 7245864 is 4685427.

7245864 is a `hidden beast` number, since 72 + 4 + 586 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7128900 + 116964 = 2670^2 + 342^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (7245863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10984 + ... + 11624.

Almost surely, 2^7245864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7245864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9890010).

7245864 is an abundant number, since it is smaller than the sum of its proper divisors (12534156).

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

7245864 is a wasteful number, since it uses less digits than its factorization.

7245864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810 (or 803 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 7245864 is about 2691.8142580795. The cubic root of 7245864 is about 193.5070205573.

The spelling of 7245864 in words is "seven million, two hundred forty-five thousand, eight hundred sixty-four".