7671440290 has 16 divisors (see below), whose sum is σ = 13810512312. Its totient is φ = 3068149504.

The previous prime is 7671440239. The next prime is 7671440299. The reversal of 7671440290 is 920441767.

It can be written as a sum of positive squares in 4 ways, for example, as 6997155201 + 674285089 = 83649^2 + 25967^2 .

It is a super-2 number, since 2×7671440290² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7671440299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28122 + ... + 127018.

Almost surely, 2^7671440290 is an apocalyptic number.

7671440290 is a deficient number, since it is larger than the sum of its proper divisors (6139072022).

7671440290 is a wasteful number, since it uses less digits than its factorization.

7671440290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106661.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 7671440290 is about 87586.7586453569. The cubic root of 7671440290 is about 1972.2363987796.

The spelling of 7671440290 in words is "seven billion, six hundred seventy-one million, four hundred forty thousand, two hundred ninety".