3556949697 has 24 divisors (see below), whose sum is σ = 5971318080. Its totient is φ = 1998090720.

The previous prime is 3556949689. The next prime is 3556949743. The reversal of 3556949697 is 7969496553.

3556949697 is a `hidden beast` number, since 3 + 5 + 56 + 9 + 496 + 97 = 666.

It is not a de Polignac number, because 3556949697 - 2³ = 3556949689 is a prime.

It is a super-2 number, since 2×3556949697² = 25303782293976783618, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (3556949497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 474754 + ... + 482187.

It is an arithmetic number, because the mean of its divisors is an integer number (248804920).

Almost surely, 2^3556949697 is an apocalyptic number.

It is an amenable number.

3556949697 is a deficient number, since it is larger than the sum of its proper divisors (2414368383).

3556949697 is a wasteful number, since it uses less digits than its factorization.

3556949697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957013 (or 957010 counting only the distinct ones).

The product of its digits is 55112400, while the sum is 63.

The square root of 3556949697 is about 59640.1684856775. The cubic root of 3556949697 is about 1526.4851173663.

The spelling of 3556949697 in words is "three billion, five hundred fifty-six million, nine hundred forty-nine thousand, six hundred ninety-seven".