3665270780 has 24 divisors (see below), whose sum is σ = 7719265008. Its totient is φ = 1461880448.

The previous prime is 3665270729. The next prime is 3665270783. The reversal of 3665270780 is 870725663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665270783) 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, 257129 + ... + 271008.

It is an arithmetic number, because the mean of its divisors is an integer number (321636042).

Almost surely, 2^3665270780 is an apocalyptic number.

It is an amenable number.

3665270780 is an abundant number, since it is smaller than the sum of its proper divisors (4053994228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3665270780 is a wasteful number, since it uses less digits than its factorization.

3665270780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528493 (or 528491 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 44.

The square root of 3665270780 is about 60541.4798299480. The cubic root of 3665270780 is about 1541.8259642099.

The spelling of 3665270780 in words is "three billion, six hundred sixty-five million, two hundred seventy thousand, seven hundred eighty".