77348445 has 8 divisors (see below), whose sum is σ = 123757536. Its totient is φ = 41252496.

The previous prime is 77348437. The next prime is 77348459. The reversal of 77348445 is 54484377.

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

It is not a de Polignac number, because 77348445 - 2³ = 77348437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77348397 and 77348406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2578267 + ... + 2578296.

It is an arithmetic number, because the mean of its divisors is an integer number (15469692).

Almost surely, 2^77348445 is an apocalyptic number.

It is an amenable number.

77348445 is a deficient number, since it is larger than the sum of its proper divisors (46409091).

77348445 is a wasteful number, since it uses less digits than its factorization.

77348445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5156571.

The product of its digits is 376320, while the sum is 42.

The square root of 77348445 is about 8794.7964729151. The cubic root of 77348445 is about 426.0728511702.

The spelling of 77348445 in words is "seventy-seven million, three hundred forty-eight thousand, four hundred forty-five".