66630734 has 4 divisors (see below), whose sum is σ = 99946104. Its totient is φ = 33315366.

The previous prime is 66630709. The next prime is 66630743. The reversal of 66630734 is 43703666.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43703666 = 2 ⋅21851833.

It is a junction number, because it is equal to n+sod(n) for n = 66630694 and 66630703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16657682 + ... + 16657685.

It is an arithmetic number, because the mean of its divisors is an integer number (24986526).

Almost surely, 2^66630734 is an apocalyptic number.

66630734 is a deficient number, since it is larger than the sum of its proper divisors (33315370).

66630734 is a wasteful number, since it uses less digits than its factorization.

66630734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33315369.

The product of its (nonzero) digits is 54432, while the sum is 35.

The square root of 66630734 is about 8162.7650952358. The cubic root of 66630734 is about 405.4072700335.

The spelling of 66630734 in words is "sixty-six million, six hundred thirty thousand, seven hundred thirty-four".