680434377 has 32 divisors (see below), whose sum is σ = 1055588352. Its totient is φ = 381858624.

The previous prime is 680434373. The next prime is 680434397. The reversal of 680434377 is 773434086.

It is not a de Polignac number, because 680434377 - 2² = 680434373 is a prime.

It is not an unprimeable number, because it can be changed into a prime (680434373) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 273463 + ... + 275939.

It is an arithmetic number, because the mean of its divisors is an integer number (32987136).

Almost surely, 2^680434377 is an apocalyptic number.

It is an amenable number.

680434377 is a deficient number, since it is larger than the sum of its proper divisors (375153975).

680434377 is a wasteful number, since it uses less digits than its factorization.

680434377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717.

The product of its (nonzero) digits is 338688, while the sum is 42.

The square root of 680434377 is about 26085.1370899215. The cubic root of 680434377 is about 879.5531378783.

The spelling of 680434377 in words is "six hundred eighty million, four hundred thirty-four thousand, three hundred seventy-seven".