16464487 has 6 divisors (see below), whose sum is σ = 17828592. Its totient is φ = 15197832.

The previous prime is 16464463. The next prime is 16464491. The reversal of 16464487 is 78446461.

It is not a de Polignac number, because 16464487 - 2⁷ = 16464359 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 (16464187) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48543 + ... + 48880.

It is an arithmetic number, because the mean of its divisors is an integer number (2971432).

Almost surely, 2^16464487 is an apocalyptic number.

16464487 is a deficient number, since it is larger than the sum of its proper divisors (1364105).

16464487 is an equidigital number, since it uses as much as digits as its factorization.

16464487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97449 (or 97436 counting only the distinct ones).

The product of its digits is 129024, while the sum is 40.

The square root of 16464487 is about 4057.6454995477. The cubic root of 16464487 is about 254.3993912987.

The spelling of 16464487 in words is "sixteen million, four hundred sixty-four thousand, four hundred eighty-seven".