64021014 has 72 divisors (see below), whose sum is σ = 152488128. Its totient is φ = 19388160.

The previous prime is 64021007. The next prime is 64021043. The reversal of 64021014 is 41012046.

64021014 is a `hidden beast` number, since 640 + 2 + 10 + 14 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 161064 + ... + 161460.

Almost surely, 2^64021014 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64021014, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76244064).

64021014 is an abundant number, since it is smaller than the sum of its proper divisors (88467114).

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

64021014 is a wasteful number, since it uses less digits than its factorization.

64021014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 64021014 is about 8001.3132672081. The cubic root of 64021014 is about 400.0437743760.

The spelling of 64021014 in words is "sixty-four million, twenty-one thousand, fourteen".