66743370 has 24 divisors (see below), whose sum is σ = 173532996. Its totient is φ = 17798208.

The previous prime is 66743363. The next prime is 66743393. The reversal of 66743370 is 7334766.

It can be written as a sum of positive squares in 2 ways, for example, as 63250209 + 3493161 = 7953^2 + 1869^2 .

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, 370707 + ... + 370886.

Almost surely, 2^66743370 is an apocalyptic number.

66743370 is an abundant number, since it is smaller than the sum of its proper divisors (106789626).

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

66743370 is a wasteful number, since it uses less digits than its factorization.

66743370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741606 (or 741603 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 36.

The square root of 66743370 is about 8169.6615596976. The cubic root of 66743370 is about 405.6355818253.

The spelling of 66743370 in words is "sixty-six million, seven hundred forty-three thousand, three hundred seventy".