77006723 has 4 divisors (see below), whose sum is σ = 77726520. Its totient is φ = 76286928.

The previous prime is 77006717. The next prime is 77006729. The reversal of 77006723 is 32760077.

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

It is an interprime number because it is at equal distance from previous prime (77006717) and next prime (77006729).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77006723 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77006723.

It is not an unprimeable number, because it can be changed into a prime (77006729) 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, 359738 + ... + 359951.

It is an arithmetic number, because the mean of its divisors is an integer number (19431630).

Almost surely, 2^77006723 is an apocalyptic number.

77006723 is a deficient number, since it is larger than the sum of its proper divisors (719797).

77006723 is a wasteful number, since it uses less digits than its factorization.

77006723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719796.

The product of its (nonzero) digits is 12348, while the sum is 32.

The square root of 77006723 is about 8775.3474575084. The cubic root of 77006723 is about 425.4444678824. Note that the first 4 decimals are identical.

The spelling of 77006723 in words is "seventy-seven million, six thousand, seven hundred twenty-three".