77503345 has 16 divisors (see below), whose sum is σ = 96744960. Its totient is φ = 59552064.

The previous prime is 77503343. The next prime is 77503351. The reversal of 77503345 is 54330577.

It is a cyclic number.

It is not a de Polignac number, because 77503345 - 2¹ = 77503343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77503345.

It is not an unprimeable number, because it can be changed into a prime (77503343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11964 + ... + 17266.

It is an arithmetic number, because the mean of its divisors is an integer number (6046560).

Almost surely, 2^77503345 is an apocalyptic number.

It is an amenable number.

77503345 is a deficient number, since it is larger than the sum of its proper divisors (19241615).

77503345 is a wasteful number, since it uses less digits than its factorization.

77503345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5424.

The product of its (nonzero) digits is 44100, while the sum is 34.

The square root of 77503345 is about 8803.5984120131. The cubic root of 77503345 is about 426.3570830282.

The spelling of 77503345 in words is "seventy-seven million, five hundred three thousand, three hundred forty-five".