66060558 has 24 divisors (see below), whose sum is σ = 143388648. Its totient is φ = 21980592.

The previous prime is 66060557. The next prime is 66060559. The reversal of 66060558 is 85506066.

It is an interprime number because it is at equal distance from previous prime (66060557) and next prime (66060559).

It is a super-3 number, since 3×66060558³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66060551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8041 + ... + 14027.

It is an arithmetic number, because the mean of its divisors is an integer number (5974527).

Almost surely, 2^66060558 is an apocalyptic number.

66060558 is an abundant number, since it is smaller than the sum of its proper divisors (77328090).

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

66060558 is a wasteful number, since it uses less digits than its factorization.

66060558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6608 (or 6605 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 66060558 is about 8127.7646373403. The cubic root of 66060558 is about 404.2475649921.

The spelling of 66060558 in words is "sixty-six million, sixty thousand, five hundred fifty-eight".