3623678809 has 9 divisors (see below), whose sum is σ = 3850462461. Its totient is φ = 3409558080.

The previous prime is 3623678801. The next prime is 3623678857. The reversal of 3623678809 is 9088763263.

The square root of 3623678809 is 60197.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 162945225 + 3460733584 = 12765^2 + 58828^2 .

It is not a de Polignac number, because 3623678809 - 2³ = 3623678801 is a prime.

It is a super-2 number, since 2×3623678809² = 26262096221591316962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3623678801) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1021579 + ... + 1025119.

Almost surely, 2^3623678809 is an apocalyptic number.

3623678809 is the 60197-th square number.

3623678809 is the 30099-th centered octagonal number.

It is an amenable number.

3623678809 is a deficient number, since it is larger than the sum of its proper divisors (226783652).

3623678809 is an frugal number, since it uses more digits than its factorization.

3623678809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7116 (or 3558 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 52.

The cubic root of 3623678809 is about 1535.9717640808.

The spelling of 3623678809 in words is "three billion, six hundred twenty-three million, six hundred seventy-eight thousand, eight hundred nine".