64501403 has 2 divisors, whose sum is σ = 64501404. Its totient is φ = 64501402.

The previous prime is 64501391. The next prime is 64501427. The reversal of 64501403 is 30410546.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64501403 - 2¹⁶ = 64435867 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (64503403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32250701 + 32250702.

It is an arithmetic number, because the mean of its divisors is an integer number (32250702).

Almost surely, 2^64501403 is an apocalyptic number.

64501403 is a deficient number, since it is larger than the sum of its proper divisors (1).

64501403 is an equidigital number, since it uses as much as digits as its factorization.

64501403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 64501403 is about 8031.2765485943. The cubic root of 64501403 is about 401.0418734763.

Adding to 64501403 its reverse (30410546), we get a palindrome (94911949).

The spelling of 64501403 in words is "sixty-four million, five hundred one thousand, four hundred three".