666734367077 has 4 divisors (see below), whose sum is σ = 666826426560. Its totient is φ = 666642307596.

The previous prime is 666734366983. The next prime is 666734367121. The reversal of 666734367077 is 770763437666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 666734367077 - 2¹² = 666734362981 is a prime.

It is a super-4 number, since 4×666734367077⁴ (a number of 48 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666734361077) 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, 46018877 + ... + 46033362.

It is an arithmetic number, because the mean of its divisors is an integer number (166706606640).

Almost surely, 2^666734367077 is an apocalyptic number.

It is an amenable number.

666734367077 is a deficient number, since it is larger than the sum of its proper divisors (92059483).

666734367077 is an equidigital number, since it uses as much as digits as its factorization.

666734367077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92059482.

The product of its (nonzero) digits is 112021056, while the sum is 62.

The spelling of 666734367077 in words is "six hundred sixty-six billion, seven hundred thirty-four million, three hundred sixty-seven thousand, seventy-seven".