68349537 has 24 divisors (see below), whose sum is σ = 109085184. Its totient is φ = 41019264.

The previous prime is 68349529. The next prime is 68349557. The reversal of 68349537 is 73594386.

It is not a de Polignac number, because 68349537 - 2³ = 68349529 is a prime.

It is a super-2 number, since 2×68349537² = 9343318416228738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68349492 and 68349501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68349557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6193 + ... + 13230.

It is an arithmetic number, because the mean of its divisors is an integer number (4545216).

Almost surely, 2^68349537 is an apocalyptic number.

It is an amenable number.

68349537 is a deficient number, since it is larger than the sum of its proper divisors (40735647).

68349537 is a wasteful number, since it uses less digits than its factorization.

68349537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19469 (or 19466 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 68349537 is about 8267.3778793521. The cubic root of 68349537 is about 408.8636728990.

It can be divided in two parts, 68349 and 537, that added together give a palindrome (68886).

The spelling of 68349537 in words is "sixty-eight million, three hundred forty-nine thousand, five hundred thirty-seven".