80780755 has 8 divisors (see below), whose sum is σ = 105749424. Its totient is φ = 58749600.

The previous prime is 80780741. The next prime is 80780767. The reversal of 80780755 is 55708708.

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

It is not a de Polignac number, because 80780755 - 2¹¹ = 80778707 is a prime.

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, 734316 + ... + 734425.

It is an arithmetic number, because the mean of its divisors is an integer number (13218678).

Almost surely, 2^80780755 is an apocalyptic number.

80780755 is a deficient number, since it is larger than the sum of its proper divisors (24968669).

80780755 is a wasteful number, since it uses less digits than its factorization.

80780755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468757.

The product of its (nonzero) digits is 78400, while the sum is 40.

The square root of 80780755 is about 8987.8114688727. The cubic root of 80780755 is about 432.2841405596.

The spelling of 80780755 in words is "eighty million, seven hundred eighty thousand, seven hundred fifty-five".