66460620 has 24 divisors (see below), whose sum is σ = 186089904. Its totient is φ = 17722816.

The previous prime is 66460619. The next prime is 66460643. The reversal of 66460620 is 2606466.

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

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, 553779 + ... + 553898.

It is an arithmetic number, because the mean of its divisors is an integer number (7753746).

Almost surely, 2^66460620 is an apocalyptic number.

66460620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66460620 is an abundant number, since it is smaller than the sum of its proper divisors (119629284).

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

66460620 is a wasteful number, since it uses less digits than its factorization.

66460620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107689 (or 1107687 counting only the distinct ones).

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

The square root of 66460620 is about 8152.3383148640. The cubic root of 66460620 is about 405.0619627799.

The spelling of 66460620 in words is "sixty-six million, four hundred sixty thousand, six hundred twenty".