67660000 has 120 divisors (see below), whose sum is σ = 177130800. Its totient is φ = 25344000.

The previous prime is 67659973. The next prime is 67660003. The reversal of 67660000 is 6676.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67660003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 339901 + ... + 340099.

It is an arithmetic number, because the mean of its divisors is an integer number (1476090).

Almost surely, 2^67660000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67660000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88565400).

67660000 is an abundant number, since it is smaller than the sum of its proper divisors (109470800).

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

67660000 is a wasteful number, since it uses less digits than its factorization.

67660000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 67660000 is about 8225.5698890715. The cubic root of 67660000 is about 407.4840973884.

Adding to 67660000 its reverse (6676), we get a palindrome (67666676).

The spelling of 67660000 in words is "sixty-seven million, six hundred sixty thousand".