66135450 has 24 divisors (see below), whose sum is σ = 164016288. Its totient is φ = 17636080.

The previous prime is 66135449. The next prime is 66135463. The reversal of 66135450 is 5453166.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220302 + ... + 220601.

It is an arithmetic number, because the mean of its divisors is an integer number (6834012).

Almost surely, 2^66135450 is an apocalyptic number.

66135450 is an abundant number, since it is smaller than the sum of its proper divisors (97880838).

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

66135450 is a wasteful number, since it uses less digits than its factorization.

66135450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440918 (or 440913 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 66135450 is about 8132.3705031190. The cubic root of 66135450 is about 404.4002707114.

The spelling of 66135450 in words is "sixty-six million, one hundred thirty-five thousand, four hundred fifty".