67800340 has 12 divisors (see below), whose sum is σ = 142380756. Its totient is φ = 27120128.

The previous prime is 67800329. The next prime is 67800349. The reversal of 67800340 is 4300876.

It can be written as a sum of positive squares in 2 ways, for example, as 35378704 + 32421636 = 5948^2 + 5694^2 .

It is a super-2 number, since 2×67800340² = 9193772208231200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67800299 and 67800308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67800349) 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, 1694989 + ... + 1695028.

It is an arithmetic number, because the mean of its divisors is an integer number (11865063).

Almost surely, 2^67800340 is an apocalyptic number.

It is an amenable number.

67800340 is an abundant number, since it is smaller than the sum of its proper divisors (74580416).

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

67800340 is a wasteful number, since it uses less digits than its factorization.

67800340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3390026 (or 3390024 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 67800340 is about 8234.0961859818. The cubic root of 67800340 is about 407.7656365805.

The spelling of 67800340 in words is "sixty-seven million, eight hundred thousand, three hundred forty".