7290644 has 6 divisors (see below), whose sum is σ = 12758634. Its totient is φ = 3645320.

The previous prime is 7290643. The next prime is 7290653. The reversal of 7290644 is 4460927.

It can be written as a sum of positive squares in only one way, i.e., 6697744 + 592900 = 2588^2 + 770^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7290644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7290641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 911327 + ... + 911334.

It is an arithmetic number, because the mean of its divisors is an integer number (2126439).

Almost surely, 2^7290644 is an apocalyptic number.

It is an amenable number.

7290644 is a deficient number, since it is larger than the sum of its proper divisors (5467990).

7290644 is a wasteful number, since it uses less digits than its factorization.

7290644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822665 (or 1822663 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 7290644 is about 2700.1192566255. The cubic root of 7290644 is about 193.9048316300.

The spelling of 7290644 in words is "seven million, two hundred ninety thousand, six hundred forty-four".