66450119 has 4 divisors (see below), whose sum is σ = 66473400. Its totient is φ = 66426840.

The previous prime is 66450101. The next prime is 66450149. The reversal of 66450119 is 91105466.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66450119 is a prime.

It is a super-2 number, since 2×66450119² = 8831236630228322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66450149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6644 + ... + 13305.

It is an arithmetic number, because the mean of its divisors is an integer number (16618350).

Almost surely, 2^66450119 is an apocalyptic number.

66450119 is a deficient number, since it is larger than the sum of its proper divisors (23281).

66450119 is a wasteful number, since it uses less digits than its factorization.

66450119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23280.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 66450119 is about 8151.6942410765. The cubic root of 66450119 is about 405.0406279417.

The spelling of 66450119 in words is "sixty-six million, four hundred fifty thousand, one hundred nineteen".