645502467 has 8 divisors (see below), whose sum is σ = 861333696. Its totient is φ = 430003112.

The previous prime is 645502453. The next prime is 645502511. The reversal of 645502467 is 764205546.

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 645502467 - 2¹¹ = 645500419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (645502667) 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, 78393 + ... + 86234.

It is an arithmetic number, because the mean of its divisors is an integer number (107666712).

Almost surely, 2^645502467 is an apocalyptic number.

645502467 is a deficient number, since it is larger than the sum of its proper divisors (215831229).

645502467 is a wasteful number, since it uses less digits than its factorization.

645502467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165937.

The product of its (nonzero) digits is 201600, while the sum is 39.

The square root of 645502467 is about 25406.7405819794. The cubic root of 645502467 is about 864.2365620777.

The spelling of 645502467 in words is "six hundred forty-five million, five hundred two thousand, four hundred sixty-seven".