7540664 has 8 divisors (see below), whose sum is σ = 14138760. Its totient is φ = 3770328.

The previous prime is 7540661. The next prime is 7540691. The reversal of 7540664 is 4660457.

7540664 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×7540664² = 113723227121792, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7540664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7540661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 471284 + ... + 471299.

It is an arithmetic number, because the mean of its divisors is an integer number (1767345).

Almost surely, 2^7540664 is an apocalyptic number.

It is an amenable number.

7540664 is a deficient number, since it is larger than the sum of its proper divisors (6598096).

7540664 is a wasteful number, since it uses less digits than its factorization.

7540664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942589 (or 942585 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 7540664 is about 2746.0269481562. The cubic root of 7540664 is about 196.0965094615.

The spelling of 7540664 in words is "seven million, five hundred forty thousand, six hundred sixty-four".