66955424 has 24 divisors (see below), whose sum is σ = 132056820. Its totient is φ = 33417216.

The previous prime is 66955417. The next prime is 66955451. The reversal of 66955424 is 42455966.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 62410000 + 4545424 = 7900^2 + 2132^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19982 + ... + 23090.

Almost surely, 2^66955424 is an apocalyptic number.

It is an amenable number.

66955424 is a deficient number, since it is larger than the sum of its proper divisors (65101396).

66955424 is a wasteful number, since it uses less digits than its factorization.

66955424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3792 (or 3784 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The square root of 66955424 is about 8182.6294062483. The cubic root of 66955424 is about 406.0647166445.

The spelling of 66955424 in words is "sixty-six million, nine hundred fifty-five thousand, four hundred twenty-four".