67345820 has 12 divisors (see below), whose sum is σ = 141426264. Its totient is φ = 26938320.

The previous prime is 67345799. The next prime is 67345867. The reversal of 67345820 is 2854376.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1683626 + ... + 1683665.

It is an arithmetic number, because the mean of its divisors is an integer number (11785522).

Almost surely, 2^67345820 is an apocalyptic number.

It is an amenable number.

67345820 is an abundant number, since it is smaller than the sum of its proper divisors (74080444).

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

67345820 is a wasteful number, since it uses less digits than its factorization.

67345820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367300 (or 3367298 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 67345820 is about 8206.4499023634. The cubic root of 67345820 is about 406.8523995570.

The spelling of 67345820 in words is "sixty-seven million, three hundred forty-five thousand, eight hundred twenty".