66948862 has 4 divisors (see below), whose sum is σ = 100423296. Its totient is φ = 33474430.

The previous prime is 66948857. The next prime is 66948863. The reversal of 66948862 is 26884966.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26884966 = 2 ⋅13442483.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66948863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16737214 + ... + 16737217.

It is an arithmetic number, because the mean of its divisors is an integer number (25105824).

Almost surely, 2^66948862 is an apocalyptic number.

66948862 is a deficient number, since it is larger than the sum of its proper divisors (33474434).

66948862 is a wasteful number, since it uses less digits than its factorization.

66948862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33474433.

The product of its digits is 995328, while the sum is 49.

The square root of 66948862 is about 8182.2284250686. The cubic root of 66948862 is about 406.0514506855.

The spelling of 66948862 in words is "sixty-six million, nine hundred forty-eight thousand, eight hundred sixty-two".