66076742 has 4 divisors (see below), whose sum is σ = 99115116. Its totient is φ = 33038370.

The previous prime is 66076741. The next prime is 66076763. The reversal of 66076742 is 24767066.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×66076742² = 8732271666669128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66076696 and 66076705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66076741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16519184 + ... + 16519187.

It is an arithmetic number, because the mean of its divisors is an integer number (24778779).

Almost surely, 2^66076742 is an apocalyptic number.

66076742 is a deficient number, since it is larger than the sum of its proper divisors (33038374).

66076742 is a wasteful number, since it uses less digits than its factorization.

66076742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33038373.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 66076742 is about 8128.7601760662. The cubic root of 66076742 is about 404.2805741411.

The spelling of 66076742 in words is "sixty-six million, seventy-six thousand, seven hundred forty-two".