6664701290 has 32 divisors (see below), whose sum is σ = 13234381776. Its totient is φ = 2400791040.

The previous prime is 6664701289. The next prime is 6664701313. The reversal of 6664701290 is 921074666.

It can be written as a sum of positive squares in 8 ways, for example, as 1465281841 + 5199419449 = 38279^2 + 72107^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 619877 + ... + 630536.

Almost surely, 2^6664701290 is an apocalyptic number.

6664701290 is a deficient number, since it is larger than the sum of its proper divisors (6569680486).

6664701290 is a wasteful number, since it uses less digits than its factorization.

6664701290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250474.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 6664701290 is about 81637.6217806472. The cubic root of 6664701290 is about 1881.8870905590.

The spelling of 6664701290 in words is "six billion, six hundred sixty-four million, seven hundred one thousand, two hundred ninety".