3561640346 has 16 divisors (see below), whose sum is σ = 5831537760. Its totient is φ = 1617983280.

The previous prime is 3561640343. The next prime is 3561640349. The reversal of 3561640346 is 6430461653.

It is an interprime number because it is at equal distance from previous prime (3561640343) and next prime (3561640349).

It is not an unprimeable number, because it can be changed into a prime (3561640343) 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, 7901 + ... + 84768.

It is an arithmetic number, because the mean of its divisors is an integer number (364471110).

Almost surely, 2^3561640346 is an apocalyptic number.

3561640346 is a deficient number, since it is larger than the sum of its proper divisors (2269897414).

3561640346 is a wasteful number, since it uses less digits than its factorization.

3561640346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94429.

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 3561640346 is about 59679.4801083253. The cubic root of 3561640346 is about 1527.1558288231.

The spelling of 3561640346 in words is "three billion, five hundred sixty-one million, six hundred forty thousand, three hundred forty-six".