67660761 has 8 divisors (see below), whose sum is σ = 103102144. Its totient is φ = 38663280.

The previous prime is 67660759. The next prime is 67660793. The reversal of 67660761 is 16706676.

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

It is not a de Polignac number, because 67660761 - 2¹ = 67660759 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (67660711) 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, 1610950 + ... + 1610991.

It is an arithmetic number, because the mean of its divisors is an integer number (12887768).

Almost surely, 2^67660761 is an apocalyptic number.

It is an amenable number.

67660761 is a deficient number, since it is larger than the sum of its proper divisors (35441383).

67660761 is a wasteful number, since it uses less digits than its factorization.

67660761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3221951.

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 67660761 is about 8225.6161471345. The cubic root of 67660761 is about 407.4856250967.

The spelling of 67660761 in words is "sixty-seven million, six hundred sixty thousand, seven hundred sixty-one".