3215663465 has 24 divisors (see below), whose sum is σ = 4683977280. Its totient is φ = 2109151968.

The previous prime is 3215663461. The next prime is 3215663467. The reversal of 3215663465 is 5643665123.

It is not a de Polignac number, because 3215663465 - 2² = 3215663461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3215663461) 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, 279695 + ... + 290964.

It is an arithmetic number, because the mean of its divisors is an integer number (195165720).

Almost surely, 2^3215663465 is an apocalyptic number.

3215663465 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3215663465 is a deficient number, since it is larger than the sum of its proper divisors (1468313815).

3215663465 is a wasteful number, since it uses less digits than its factorization.

3215663465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570701 (or 570694 counting only the distinct ones).

The product of its digits is 388800, while the sum is 41.

The square root of 3215663465 is about 56706.8202688178. The cubic root of 3215663465 is about 1476.0130495403.

The spelling of 3215663465 in words is "three billion, two hundred fifteen million, six hundred sixty-three thousand, four hundred sixty-five".