68307534 has 12 divisors (see below), whose sum is σ = 147999696. Its totient is φ = 22769172.

The previous prime is 68307529. The next prime is 68307559. The reversal of 68307534 is 43570386.

It is a happy number.

It is a super-2 number, since 2×68307534² = 9331838402322312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1897414 + ... + 1897449.

It is an arithmetic number, because the mean of its divisors is an integer number (12333308).

Almost surely, 2^68307534 is an apocalyptic number.

68307534 is an abundant number, since it is smaller than the sum of its proper divisors (79692162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68307534 is a wasteful number, since it uses less digits than its factorization.

68307534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3794871 (or 3794868 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 68307534 is about 8264.8372034784. The cubic root of 68307534 is about 408.7799024220.

The spelling of 68307534 in words is "sixty-eight million, three hundred seven thousand, five hundred thirty-four".