66711038 has 4 divisors (see below), whose sum is σ = 100066560. Its totient is φ = 33355518.

The previous prime is 66711023. The next prime is 66711061. The reversal of 66711038 is 83011766.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 66710995 and 66711013.

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, 16677758 + ... + 16677761.

It is an arithmetic number, because the mean of its divisors is an integer number (25016640).

Almost surely, 2^66711038 is an apocalyptic number.

66711038 is a deficient number, since it is larger than the sum of its proper divisors (33355522).

66711038 is a wasteful number, since it uses less digits than its factorization.

66711038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33355521.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 66711038 is about 8167.6825354564. The cubic root of 66711038 is about 405.5700715584.

The spelling of 66711038 in words is "sixty-six million, seven hundred eleven thousand, thirty-eight".