66344499 has 36 divisors (see below), whose sum is σ = 105855984. Its totient is φ = 40008384.

The previous prime is 66344491. The next prime is 66344503. The reversal of 66344499 is 99444366.

It is a happy number.

66344499 is a `hidden beast` number, since 6 + 634 + 4 + 4 + 9 + 9 = 666.

It is not a de Polignac number, because 66344499 - 2³ = 66344491 is a prime.

It is a super-2 number, since 2×66344499² = 8803185095122002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66344491) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 80202 + ... + 81024.

It is an arithmetic number, because the mean of its divisors is an integer number (2940444).

Almost surely, 2^66344499 is an apocalyptic number.

66344499 is a deficient number, since it is larger than the sum of its proper divisors (39511485).

66344499 is a wasteful number, since it uses less digits than its factorization.

66344499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908 (or 892 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 66344499 is about 8145.2132568767. The cubic root of 66344499 is about 404.8259151228.

The spelling of 66344499 in words is "sixty-six million, three hundred forty-four thousand, four hundred ninety-nine".