67340820 has 48 divisors (see below), whose sum is σ = 188939520. Its totient is φ = 17920896.

The previous prime is 67340797. The next prime is 67340827. The reversal of 67340820 is 2804376.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67340827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41749 + ... + 43331.

It is an arithmetic number, because the mean of its divisors is an integer number (3936240).

Almost surely, 2^67340820 is an apocalyptic number.

67340820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67340820 is an abundant number, since it is smaller than the sum of its proper divisors (121598700).

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

67340820 is a wasteful number, since it uses less digits than its factorization.

67340820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304 (or 2302 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 67340820 is about 8206.1452582805. The cubic root of 67340820 is about 406.8423305710.

The spelling of 67340820 in words is "sixty-seven million, three hundred forty thousand, eight hundred twenty".