3557734661 has 4 divisors (see below), whose sum is σ = 3831406572. Its totient is φ = 3284062752.

The previous prime is 3557734651. The next prime is 3557734673. The reversal of 3557734661 is 1664377553.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1488030625 + 2069704036 = 38575^2 + 45494^2 .

It is a cyclic number.

It is not a de Polignac number, because 3557734661 - 2⁶ = 3557734597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3557734651) 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, 136835936 + ... + 136835961.

It is an arithmetic number, because the mean of its divisors is an integer number (957851643).

Almost surely, 2^3557734661 is an apocalyptic number.

It is an amenable number.

3557734661 is a deficient number, since it is larger than the sum of its proper divisors (273671911).

3557734661 is a wasteful number, since it uses less digits than its factorization.

3557734661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273671910.

The product of its digits is 1587600, while the sum is 47.

The square root of 3557734661 is about 59646.7489558316. The cubic root of 3557734661 is about 1526.5973996899.

The spelling of 3557734661 in words is "three billion, five hundred fifty-seven million, seven hundred thirty-four thousand, six hundred sixty-one".