77945045 has 8 divisors (see below), whose sum is σ = 97600896. Its totient is φ = 59644816.

The previous prime is 77944969. The next prime is 77945081. The reversal of 77945045 is 54054977.

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

It is a cyclic number.

It is not a de Polignac number, because 77945045 - 2¹⁰ = 77944021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77944993 and 77945011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338777 + ... + 339006.

It is an arithmetic number, because the mean of its divisors is an integer number (12200112).

Almost surely, 2^77945045 is an apocalyptic number.

It is an amenable number.

77945045 is a deficient number, since it is larger than the sum of its proper divisors (19655851).

77945045 is a wasteful number, since it uses less digits than its factorization.

77945045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677811.

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 77945045 is about 8828.6491039117. The cubic root of 77945045 is about 427.1655010231.

The spelling of 77945045 in words is "seventy-seven million, nine hundred forty-five thousand, forty-five".