7449864 has 64 divisors (see below), whose sum is σ = 19535040. Its totient is φ = 2365440.

The previous prime is 7449863. The next prime is 7449877. The reversal of 7449864 is 4689447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7449863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65872 + ... + 65984.

It is an arithmetic number, because the mean of its divisors is an integer number (305235).

Almost surely, 2^7449864 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 7449864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9767520).

7449864 is an abundant number, since it is smaller than the sum of its proper divisors (12085176).

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

7449864 is a wasteful number, since it uses less digits than its factorization.

7449864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 226 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 7449864 is about 2729.4438994052. The cubic root of 7449864 is about 195.3062380798.

The spelling of 7449864 in words is "seven million, four hundred forty-nine thousand, eight hundred sixty-four".