66503342 has 4 divisors (see below), whose sum is σ = 99755016. Its totient is φ = 33251670.

The previous prime is 66503317. The next prime is 66503347. The reversal of 66503342 is 24330566.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66503347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16625834 + ... + 16625837.

It is an arithmetic number, because the mean of its divisors is an integer number (24938754).

Almost surely, 2^66503342 is an apocalyptic number.

66503342 is a deficient number, since it is larger than the sum of its proper divisors (33251674).

66503342 is a wasteful number, since it uses less digits than its factorization.

66503342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33251673.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 66503342 is about 8154.9581237429. The cubic root of 66503342 is about 405.1487377277.

The spelling of 66503342 in words is "sixty-six million, five hundred three thousand, three hundred forty-two".