7540866 has 24 divisors (see below), whose sum is σ = 16548480. Its totient is φ = 2481336.

The previous prime is 7540861. The next prime is 7540873. The reversal of 7540866 is 6680457.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 7540866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7540861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1230 + ... + 4073.

It is an arithmetic number, because the mean of its divisors is an integer number (689520).

Almost surely, 2^7540866 is an apocalyptic number.

7540866 is an abundant number, since it is smaller than the sum of its proper divisors (9007614).

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

7540866 is a wasteful number, since it uses less digits than its factorization.

7540866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5390 (or 5387 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 7540866 is about 2746.0637283210. The cubic root of 7540866 is about 196.0982604630.

The spelling of 7540866 in words is "seven million, five hundred forty thousand, eight hundred sixty-six".