7540640674 has 12 divisors (see below), whose sum is σ = 13157648694. Its totient is φ = 3231703104.

The previous prime is 7540640669. The next prime is 7540640677. The reversal of 7540640674 is 4760460457.

It can be written as a sum of positive squares in only one way, i.e., 7414415449 + 126225225 = 86107^2 + 11235^2 .

It is a super-2 number, since 2×7540640674² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7540640674.

It is not an unprimeable number, because it can be changed into a prime (7540640677) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38472559 + ... + 38472754.

Almost surely, 2^7540640674 is an apocalyptic number.

7540640674 is a deficient number, since it is larger than the sum of its proper divisors (5617008020).

7540640674 is a wasteful number, since it uses less digits than its factorization.

7540640674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76945329 (or 76945322 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 43.

The square root of 7540640674 is about 86836.8624145299. The cubic root of 7540640674 is about 1960.9630726220.

The spelling of 7540640674 in words is "seven billion, five hundred forty million, six hundred forty thousand, six hundred seventy-four".