15690064 has 40 divisors (see below), whose sum is σ = 32978792. Its totient is φ = 7188480.

The previous prime is 15690049. The next prime is 15690083. The reversal of 15690064 is 46009651.

It can be written as a sum of positive squares in 4 ways, for example, as 8464 + 15681600 = 92^2 + 3960^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49972 + ... + 50284.

Almost surely, 2^15690064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15690064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16489396).

15690064 is an abundant number, since it is smaller than the sum of its proper divisors (17288728).

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

15690064 is a wasteful number, since it uses less digits than its factorization.

15690064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575 (or 569 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 15690064 is about 3961.0685427041. The cubic root of 15690064 is about 250.3465274530.

The spelling of 15690064 in words is "fifteen million, six hundred ninety thousand, sixty-four".