66682534 has 8 divisors (see below), whose sum is σ = 105907608. Its totient is φ = 31380000.

The previous prime is 66682501. The next prime is 66682559. The reversal of 66682534 is 43528666.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×66682534² = 8893120681322312, which contains 22 as substring.

It is a congruent number.

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, 980592 + ... + 980659.

It is an arithmetic number, because the mean of its divisors is an integer number (13238451).

Almost surely, 2^66682534 is an apocalyptic number.

66682534 is a deficient number, since it is larger than the sum of its proper divisors (39225074).

66682534 is a wasteful number, since it uses less digits than its factorization.

66682534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961270.

The product of its digits is 207360, while the sum is 40.

The square root of 66682534 is about 8165.9374232234. The cubic root of 66682534 is about 405.5122999285.

The spelling of 66682534 in words is "sixty-six million, six hundred eighty-two thousand, five hundred thirty-four".