66402050 has 96 divisors (see below), whose sum is σ = 149615424. Its totient is φ = 21600000.

The previous prime is 66402043. The next prime is 66402053. The reversal of 66402050 is 5020466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66402053) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 264425 + ... + 264675.

It is an arithmetic number, because the mean of its divisors is an integer number (1558494).

Almost surely, 2^66402050 is an apocalyptic number.

66402050 is an abundant number, since it is smaller than the sum of its proper divisors (83213374).

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

66402050 is a wasteful number, since it uses less digits than its factorization.

66402050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 66402050 is about 8148.7453021922. The cubic root of 66402050 is about 404.9429376498.

The spelling of 66402050 in words is "sixty-six million, four hundred two thousand, fifty".