7460721 has 8 divisors (see below), whose sum is σ = 11052960. Its totient is φ = 4973796.

The previous prime is 7460699. The next prime is 7460731. The reversal of 7460721 is 1270647.

It is not a de Polignac number, because 7460721 - 2⁶ = 7460657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 276323 = 7460721 / (7 + 4 + 6 + 0 + 7 + 2 + 1).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7460731) 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, 138135 + ... + 138188.

It is an arithmetic number, because the mean of its divisors is an integer number (1381620).

Almost surely, 2^7460721 is an apocalyptic number.

It is an amenable number.

7460721 is a deficient number, since it is larger than the sum of its proper divisors (3592239).

7460721 is a wasteful number, since it uses less digits than its factorization.

7460721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276332 (or 276326 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 7460721 is about 2731.4320419882. The cubic root of 7460721 is about 195.4010680253.

The spelling of 7460721 in words is "seven million, four hundred sixty thousand, seven hundred twenty-one".