3502656421 has 16 divisors (see below), whose sum is σ = 4122197568. Its totient is φ = 2940371200.

The previous prime is 3502656371. The next prime is 3502656491. The reversal of 3502656421 is 1246562053.

It is a cyclic number.

It is not a de Polignac number, because 3502656421 - 2⁷ = 3502656293 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 (3502656491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166795 + ... + 186616.

It is an arithmetic number, because the mean of its divisors is an integer number (257637348).

Almost surely, 2^3502656421 is an apocalyptic number.

It is an amenable number.

3502656421 is a deficient number, since it is larger than the sum of its proper divisors (619541147).

3502656421 is a wasteful number, since it uses less digits than its factorization.

3502656421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353492.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 3502656421 is about 59183.2444277939. The cubic root of 3502656421 is about 1518.6785058816.

The spelling of 3502656421 in words is "three billion, five hundred two million, six hundred fifty-six thousand, four hundred twenty-one".