3445755621 has 64 divisors (see below), whose sum is σ = 6143662080. Its totient is φ = 1663683840.

The previous prime is 3445755613. The next prime is 3445755641. The reversal of 3445755621 is 1265575443.

3445755621 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3445755621 - 2³ = 3445755613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3445755601) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 225211 + ... + 240023.

It is an arithmetic number, because the mean of its divisors is an integer number (95994720).

Almost surely, 2^3445755621 is an apocalyptic number.

It is an amenable number.

3445755621 is a deficient number, since it is larger than the sum of its proper divisors (2697906459).

3445755621 is a wasteful number, since it uses less digits than its factorization.

3445755621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14906.

The product of its digits is 504000, while the sum is 42.

The square root of 3445755621 is about 58700.5589496386. The cubic root of 3445755621 is about 1510.4099030449.

The spelling of 3445755621 in words is "three billion, four hundred forty-five million, seven hundred fifty-five thousand, six hundred twenty-one".