66950634 has 32 divisors (see below), whose sum is σ = 136160640. Its totient is φ = 21943872.

The previous prime is 66950629. The next prime is 66950651. The reversal of 66950634 is 43605966.

It is a happy number.

It is a super-3 number, since 3×66950634³ (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 66950592 and 66950601.

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, 108912 + ... + 109524.

It is an arithmetic number, because the mean of its divisors is an integer number (4255020).

Almost surely, 2^66950634 is an apocalyptic number.

66950634 is an abundant number, since it is smaller than the sum of its proper divisors (69210006).

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

66950634 is a wasteful number, since it uses less digits than its factorization.

66950634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 66950634 is about 8182.3367078115. The cubic root of 66950634 is about 406.0550331055.

The spelling of 66950634 in words is "sixty-six million, nine hundred fifty thousand, six hundred thirty-four".