77422007 has 4 divisors (see below), whose sum is σ = 83377560. Its totient is φ = 71466456.

The previous prime is 77422003. The next prime is 77422013. The reversal of 77422007 is 70022477.

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

It is a cyclic number.

It is not a de Polignac number, because 77422007 - 2² = 77422003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77422003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2977757 + ... + 2977782.

It is an arithmetic number, because the mean of its divisors is an integer number (20844390).

Almost surely, 2^77422007 is an apocalyptic number.

77422007 is a deficient number, since it is larger than the sum of its proper divisors (5955553).

77422007 is a wasteful number, since it uses less digits than its factorization.

77422007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5955552.

The product of its (nonzero) digits is 5488, while the sum is 29.

The square root of 77422007 is about 8798.9776110637. The cubic root of 77422007 is about 426.2078801299.

The spelling of 77422007 in words is "seventy-seven million, four hundred twenty-two thousand, seven".