67490820 has 96 divisors (see below), whose sum is σ = 212701440. Its totient is φ = 17985888.

The previous prime is 67490803. The next prime is 67490873. The reversal of 67490820 is 2809476.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42969 + ... + 44511.

It is an arithmetic number, because the mean of its divisors is an integer number (2215640).

Almost surely, 2^67490820 is an apocalyptic number.

67490820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67490820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106350720).

67490820 is an abundant number, since it is smaller than the sum of its proper divisors (145210620).

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

67490820 is a wasteful number, since it uses less digits than its factorization.

67490820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573 (or 1553 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 67490820 is about 8215.2796665725. The cubic root of 67490820 is about 407.1441836126.

The spelling of 67490820 in words is "sixty-seven million, four hundred ninety thousand, eight hundred twenty".