64690048 has 32 divisors (see below), whose sum is σ = 131628960. Its totient is φ = 31653888.

The previous prime is 64690037. The next prime is 64690057. The reversal of 64690048 is 84009646.

64690048 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 64689989 and 64690016.

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 3 ways as a sum of consecutive naturals, for example, 640 + ... + 11392.

It is an arithmetic number, because the mean of its divisors is an integer number (4113405).

Almost surely, 2^64690048 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 64690048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65814480).

64690048 is an abundant number, since it is smaller than the sum of its proper divisors (66938912).

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

64690048 is a wasteful number, since it uses less digits than its factorization.

64690048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10814 (or 10802 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 64690048 is about 8043.0123709963. The cubic root of 64690048 is about 401.4324639936.

The spelling of 64690048 in words is "sixty-four million, six hundred ninety thousand, forty-eight".