66417026 has 16 divisors (see below), whose sum is σ = 109785984. Its totient is φ = 29940624.

The previous prime is 66417023. The next prime is 66417037. The reversal of 66417026 is 62071466.

It is a super-2 number, since 2×66417026² = 8822442685369352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66416983 and 66417001.

It is not an unprimeable number, because it can be changed into a prime (66417023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28586 + ... + 30821.

It is an arithmetic number, because the mean of its divisors is an integer number (6861624).

Almost surely, 2^66417026 is an apocalyptic number.

66417026 is a deficient number, since it is larger than the sum of its proper divisors (43368958).

66417026 is a wasteful number, since it uses less digits than its factorization.

66417026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59465.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 66417026 is about 8149.6641648598. The cubic root of 66417026 is about 404.9733783243.

The spelling of 66417026 in words is "sixty-six million, four hundred seventeen thousand, twenty-six".