66542262 has 32 divisors (see below), whose sum is σ = 138015360. Its totient is φ = 21372480.

The previous prime is 66542251. The next prime is 66542279. The reversal of 66542262 is 26224566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18789 + ... + 22047.

It is an arithmetic number, because the mean of its divisors is an integer number (4312980).

Almost surely, 2^66542262 is an apocalyptic number.

66542262 is an abundant number, since it is smaller than the sum of its proper divisors (71473098).

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

66542262 is a wasteful number, since it uses less digits than its factorization.

66542262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388.

The product of its digits is 34560, while the sum is 33.

The square root of 66542262 is about 8157.3440530604. The cubic root of 66542262 is about 405.2277578859.

The spelling of 66542262 in words is "sixty-six million, five hundred forty-two thousand, two hundred sixty-two".