68493261 has 4 divisors (see below), whose sum is σ = 91324352. Its totient is φ = 45662172.

The previous prime is 68493197. The next prime is 68493263. The reversal of 68493261 is 16239486.

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 not a de Polignac number, because 68493261 - 2⁶ = 68493197 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 (68493263) 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, 11415541 + ... + 11415546.

It is an arithmetic number, because the mean of its divisors is an integer number (22831088).

Almost surely, 2^68493261 is an apocalyptic number.

It is an amenable number.

68493261 is a deficient number, since it is larger than the sum of its proper divisors (22831091).

68493261 is a wasteful number, since it uses less digits than its factorization.

68493261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22831090.

The product of its digits is 62208, while the sum is 39.

The square root of 68493261 is about 8276.0655507312. The cubic root of 68493261 is about 409.1500556322.

The spelling of 68493261 in words is "sixty-eight million, four hundred ninety-three thousand, two hundred sixty-one".