7664140738 has 8 divisors (see below), whose sum is σ = 11496811788. Its totient is φ = 3831870144.

The previous prime is 7664140709. The next prime is 7664140741. The reversal of 7664140738 is 8370414667.

It can be written as a sum of positive squares in 2 ways, for example, as 7452350929 + 211789809 = 86327^2 + 14553^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 46531 + ... + 132262.

Almost surely, 2^7664140738 is an apocalyptic number.

7664140738 is a deficient number, since it is larger than the sum of its proper divisors (3832671050).

7664140738 is a wasteful number, since it uses less digits than its factorization.

7664140738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200228.

The product of its (nonzero) digits is 677376, while the sum is 46.

The square root of 7664140738 is about 87545.0783196863. The cubic root of 7664140738 is about 1971.6106574932.

The spelling of 7664140738 in words is "seven billion, six hundred sixty-four million, one hundred forty thousand, seven hundred thirty-eight".