66462020 has 24 divisors (see below), whose sum is σ = 140280000. Its totient is φ = 26449632.

The previous prime is 66462017. The next prime is 66462031. The reversal of 66462020 is 2026466.

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, 4370 + ... + 12329.

It is an arithmetic number, because the mean of its divisors is an integer number (5845000).

Almost surely, 2^66462020 is an apocalyptic number.

It is an amenable number.

66462020 is an abundant number, since it is smaller than the sum of its proper divisors (73817980).

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

66462020 is a wasteful number, since it uses less digits than its factorization.

66462020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16907 (or 16905 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 66462020 is about 8152.4241793469. The cubic root of 66462020 is about 405.0648069843.

Adding to 66462020 its reverse (2026466), we get a palindrome (68488486).

The spelling of 66462020 in words is "sixty-six million, four hundred sixty-two thousand, twenty".