67780480 has 32 divisors (see below), whose sum is σ = 162039240. Its totient is φ = 27111936.

The previous prime is 67780469. The next prime is 67780487. The reversal of 67780480 is 8408776.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67780487) 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, 52314 + ... + 53593.

Almost surely, 2^67780480 is an apocalyptic number.

It is an amenable number.

67780480 is an abundant number, since it is smaller than the sum of its proper divisors (94258760).

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

67780480 is a wasteful number, since it uses less digits than its factorization.

67780480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105926 (or 105914 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 67780480 is about 8232.8901365195. The cubic root of 67780480 is about 407.7258186072.

The spelling of 67780480 in words is "sixty-seven million, seven hundred eighty thousand, four hundred eighty".