68531000 has 32 divisors (see below), whose sum is σ = 160364880. Its totient is φ = 27412000.

The previous prime is 68530963. The next prime is 68531033. The reversal of 68531000 is 13586.

It is a super-2 number, since 2×68531000² = 9392995922000000, 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 7 ways as a sum of consecutive naturals, for example, 33266 + ... + 35265.

Almost surely, 2^68531000 is an apocalyptic number.

It is an amenable number.

68531000 is an abundant number, since it is smaller than the sum of its proper divisors (91833880).

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

68531000 is a wasteful number, since it uses less digits than its factorization.

68531000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68552 (or 68538 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 68531000 is about 8278.3452452770. The cubic root of 68531000 is about 409.2251874952.

Adding to 68531000 its reverse (13586), we get a palindrome (68544586).

The spelling of 68531000 in words is "sixty-eight million, five hundred thirty-one thousand".