66760426 has 8 divisors (see below), whose sum is σ = 100178820. Its totient is φ = 33367488.

The previous prime is 66760409. The next prime is 66760439. The reversal of 66760426 is 62406766.

It can be written as a sum of positive squares in 2 ways, for example, as 65626201 + 1134225 = 8101^2 + 1065^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2880 + ... + 11908.

Almost surely, 2^66760426 is an apocalyptic number.

66760426 is a deficient number, since it is larger than the sum of its proper divisors (33418394).

66760426 is a wasteful number, since it uses less digits than its factorization.

66760426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12728.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 66760426 is about 8170.7053551086. The cubic root of 66760426 is about 405.6701317301.

The spelling of 66760426 in words is "sixty-six million, seven hundred sixty thousand, four hundred twenty-six".