3215840487 has 4 divisors (see below), whose sum is σ = 4287787320. Its totient is φ = 2143893656.

The previous prime is 3215840461. The next prime is 3215840501. The reversal of 3215840487 is 7840485123.

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

It is a cyclic number.

It is not a de Polignac number, because 3215840487 - 2¹⁰ = 3215839463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3215840387) 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, 535973412 + ... + 535973417.

It is an arithmetic number, because the mean of its divisors is an integer number (1071946830).

Almost surely, 2^3215840487 is an apocalyptic number.

3215840487 is a deficient number, since it is larger than the sum of its proper divisors (1071946833).

3215840487 is a wasteful number, since it uses less digits than its factorization.

3215840487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071946832.

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 3215840487 is about 56708.3811001513. The cubic root of 3215840487 is about 1476.0401338409.

The spelling of 3215840487 in words is "three billion, two hundred fifteen million, eight hundred forty thousand, four hundred eighty-seven".