68263501 has 4 divisors (see below), whose sum is σ = 68329504. Its totient is φ = 68197500.

The previous prime is 68263469. The next prime is 68263511. The reversal of 68263501 is 10536286.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68263501 - 2⁵ = 68263469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68263511) 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, 31425 + ... + 33526.

It is an arithmetic number, because the mean of its divisors is an integer number (17082376).

Almost surely, 2^68263501 is an apocalyptic number.

It is an amenable number.

68263501 is a deficient number, since it is larger than the sum of its proper divisors (66003).

68263501 is a wasteful number, since it uses less digits than its factorization.

68263501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66002.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 68263501 is about 8262.1728982151. The cubic root of 68263501 is about 408.6920464492.

Adding to 68263501 its reverse (10536286), we get a palindrome (78799787).

The spelling of 68263501 in words is "sixty-eight million, two hundred sixty-three thousand, five hundred one".