66461450 has 48 divisors (see below), whose sum is σ = 135928800. Its totient is φ = 23976000.

The previous prime is 66461419. The next prime is 66461477. The reversal of 66461450 is 5416466.

It is a super-2 number, since 2×66461450² = 8834248672205000, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81545 + ... + 82355.

It is an arithmetic number, because the mean of its divisors is an integer number (2831850).

Almost surely, 2^66461450 is an apocalyptic number.

66461450 is an abundant number, since it is smaller than the sum of its proper divisors (69467350).

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

66461450 is a wasteful number, since it uses less digits than its factorization.

66461450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983 (or 978 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 66461450 is about 8152.3892203452. The cubic root of 66461450 is about 405.0636489916.

The spelling of 66461450 in words is "sixty-six million, four hundred sixty-one thousand, four hundred fifty".