66700370 has 32 divisors (see below), whose sum is σ = 132200640. Its totient is φ = 24027840.

The previous prime is 66700369. The next prime is 66700373. The reversal of 66700370 is 7300766.

It is not an unprimeable number, because it can be changed into a prime (66700373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9209 + ... + 14771.

It is an arithmetic number, because the mean of its divisors is an integer number (4131270).

Almost surely, 2^66700370 is an apocalyptic number.

66700370 is a deficient number, since it is larger than the sum of its proper divisors (65500270).

66700370 is a wasteful number, since it uses less digits than its factorization.

66700370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5690.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 66700370 is about 8167.0294477246. The cubic root of 66700370 is about 405.5484516871.

The spelling of 66700370 in words is "sixty-six million, seven hundred thousand, three hundred seventy".