66337428 has 24 divisors (see below), whose sum is σ = 161517888. Its totient is φ = 21150976.

The previous prime is 66337423. The next prime is 66337429. The reversal of 66337428 is 82473366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66337421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119901 + ... + 120452.

It is an arithmetic number, because the mean of its divisors is an integer number (6729912).

Almost surely, 2^66337428 is an apocalyptic number.

It is an amenable number.

66337428 is an abundant number, since it is smaller than the sum of its proper divisors (95180460).

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

66337428 is a wasteful number, since it uses less digits than its factorization.

66337428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240383 (or 240381 counting only the distinct ones).

The product of its digits is 145152, while the sum is 39.

The square root of 66337428 is about 8144.7791866938. The cubic root of 66337428 is about 404.8115324897.

The spelling of 66337428 in words is "sixty-six million, three hundred thirty-seven thousand, four hundred twenty-eight".