3690724261 has 4 divisors (see below), whose sum is σ = 4217970592. Its totient is φ = 3163477932.

The previous prime is 3690724253. The next prime is 3690724319. The reversal of 3690724261 is 1624270963.

It is a happy number.

3690724261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3690724261 - 2³ = 3690724253 is a prime.

It is a super-2 number, since 2×3690724261² = 27242891141467992242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3690724861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263623155 + ... + 263623168.

It is an arithmetic number, because the mean of its divisors is an integer number (1054492648).

Almost surely, 2^3690724261 is an apocalyptic number.

It is an amenable number.

3690724261 is a deficient number, since it is larger than the sum of its proper divisors (527246331).

3690724261 is an equidigital number, since it uses as much as digits as its factorization.

3690724261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527246330.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 3690724261 is about 60751.3313516667. The cubic root of 3690724261 is about 1545.3868053973.

The spelling of 3690724261 in words is "three billion, six hundred ninety million, seven hundred twenty-four thousand, two hundred sixty-one".