66460431 has 8 divisors (see below), whose sum is σ = 91669680. Its totient is φ = 42779072.

The previous prime is 66460421. The next prime is 66460451. The reversal of 66460431 is 13406466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66460431 - 2⁶ = 66460367 is a prime.

It is a super-2 number, since 2×66460431² = 8833977777411522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66460411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381870 + ... + 382043.

It is an arithmetic number, because the mean of its divisors is an integer number (11458710).

Almost surely, 2^66460431 is an apocalyptic number.

66460431 is a deficient number, since it is larger than the sum of its proper divisors (25209249).

66460431 is a wasteful number, since it uses less digits than its factorization.

66460431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763945.

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

The square root of 66460431 is about 8152.3267230895. The cubic root of 66460431 is about 405.0615788092.

Adding to 66460431 its reverse (13406466), we get a palindrome (79866897).

The spelling of 66460431 in words is "sixty-six million, four hundred sixty thousand, four hundred thirty-one".