7400645 has 16 divisors (see below), whose sum is σ = 10195200. Its totient is φ = 5051904.

The previous prime is 7400621. The next prime is 7400647. The reversal of 7400645 is 5460047.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7400645 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7400647) 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, 12056 + ... + 12654.

It is an arithmetic number, because the mean of its divisors is an integer number (637200).

Almost surely, 2^7400645 is an apocalyptic number.

It is an amenable number.

7400645 is a deficient number, since it is larger than the sum of its proper divisors (2794555).

7400645 is a wasteful number, since it uses less digits than its factorization.

7400645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 7400645 is about 2720.4126525217. The cubic root of 7400645 is about 194.8751776224.

The spelling of 7400645 in words is "seven million, four hundred thousand, six hundred forty-five".