7640737 has 4 divisors (see below), whose sum is σ = 8228500. Its totient is φ = 7052976.

The previous prime is 7640723. The next prime is 7640749. The reversal of 7640737 is 7370467.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3129361 + 4511376 = 1769^2 + 2124^2 .

It is a cyclic number.

It is not a de Polignac number, because 7640737 - 2¹¹ = 7638689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7640707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293862 + ... + 293887.

It is an arithmetic number, because the mean of its divisors is an integer number (2057125).

Almost surely, 2^7640737 is an apocalyptic number.

It is an amenable number.

7640737 is a deficient number, since it is larger than the sum of its proper divisors (587763).

7640737 is a wasteful number, since it uses less digits than its factorization.

7640737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587762.

The product of its (nonzero) digits is 24696, while the sum is 34.

The square root of 7640737 is about 2764.1883076231. The cubic root of 7640737 is about 196.9601730065.

The spelling of 7640737 in words is "seven million, six hundred forty thousand, seven hundred thirty-seven".