66071432 has 16 divisors (see below), whose sum is σ = 141581760. Its totient is φ = 28316304.

The previous prime is 66071431. The next prime is 66071461. The reversal of 66071432 is 23417066.

It is a junction number, because it is equal to n+sod(n) for n = 66071395 and 66071404.

It is not an unprimeable number, because it can be changed into a prime (66071431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 589868 + ... + 589979.

It is an arithmetic number, because the mean of its divisors is an integer number (8848860).

Almost surely, 2^66071432 is an apocalyptic number.

It is an amenable number.

66071432 is an abundant number, since it is smaller than the sum of its proper divisors (75510328).

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

66071432 is a wasteful number, since it uses less digits than its factorization.

66071432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179860 (or 1179856 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 66071432 is about 8128.4335514292. The cubic root of 66071432 is about 404.2697443731.

Adding to 66071432 its reverse (23417066), we get a palindrome (89488498).

The spelling of 66071432 in words is "sixty-six million, seventy-one thousand, four hundred thirty-two".