67780461 has 8 divisors (see below), whose sum is σ = 103284544. Its totient is φ = 38731680.

The previous prime is 67780423. The next prime is 67780469. The reversal of 67780461 is 16408776.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 67780461 - 2⁶ = 67780397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67780469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1613800 + ... + 1613841.

It is an arithmetic number, because the mean of its divisors is an integer number (12910568).

Almost surely, 2^67780461 is an apocalyptic number.

It is an amenable number.

67780461 is a deficient number, since it is larger than the sum of its proper divisors (35504083).

67780461 is a wasteful number, since it uses less digits than its factorization.

67780461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3227651.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 67780461 is about 8232.8889826111. Note that the first 3 decimals coincide. The cubic root of 67780461 is about 407.7257805097.

The spelling of 67780461 in words is "sixty-seven million, seven hundred eighty thousand, four hundred sixty-one".