66026460 has 24 divisors (see below), whose sum is σ = 184874256. Its totient is φ = 17607040.

The previous prime is 66026459. The next prime is 66026473. The reversal of 66026460 is 6462066.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550161 + ... + 550280.

It is an arithmetic number, because the mean of its divisors is an integer number (7703094).

Almost surely, 2^66026460 is an apocalyptic number.

66026460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66026460 is an abundant number, since it is smaller than the sum of its proper divisors (118847796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66026460 is a wasteful number, since it uses less digits than its factorization.

66026460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100453 (or 1100451 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 66026460 is about 8125.6667418742. Note that the first 3 decimals coincide. The cubic root of 66026460 is about 404.1780005088.

The spelling of 66026460 in words is "sixty-six million, twenty-six thousand, four hundred sixty".