64936242 has 80 divisors (see below), whose sum is σ = 167758272. Its totient is φ = 18390240.

The previous prime is 64936237. The next prime is 64936271. The reversal of 64936242 is 24263946.

64936242 is a `hidden beast` number, since 649 + 3 + 6 + 2 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 64936197 and 64936206.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 196017 + ... + 196347.

Almost surely, 2^64936242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64936242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83879136).

64936242 is an abundant number, since it is smaller than the sum of its proper divisors (102822030).

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

64936242 is a wasteful number, since it uses less digits than its factorization.

64936242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525 (or 516 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 64936242 is about 8058.3026748814. The cubic root of 64936242 is about 401.9410695528.

The spelling of 64936242 in words is "sixty-four million, nine hundred thirty-six thousand, two hundred forty-two".