66248858 has 32 divisors (see below), whose sum is σ = 114609600. Its totient is φ = 28463616.

The previous prime is 66248851. The next prime is 66248869. The reversal of 66248858 is 85884266.

It is a super-2 number, since 2×66248858² = 8777822372608328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66248851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28010 + ... + 30282.

It is an arithmetic number, because the mean of its divisors is an integer number (3581550).

Almost surely, 2^66248858 is an apocalyptic number.

66248858 is a deficient number, since it is larger than the sum of its proper divisors (48360742).

66248858 is a wasteful number, since it uses less digits than its factorization.

66248858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2366.

The product of its digits is 737280, while the sum is 47.

The square root of 66248858 is about 8139.3401452452. The cubic root of 66248858 is about 404.6312917258.

The spelling of 66248858 in words is "sixty-six million, two hundred forty-eight thousand, eight hundred fifty-eight".