677720472 has 128 divisors (see below), whose sum is σ = 2003339520. Its totient is φ = 188352000.

The previous prime is 677720437. The next prime is 677720479. The reversal of 677720472 is 274027776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677720479) 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, 620647 + ... + 621737.

It is an arithmetic number, because the mean of its divisors is an integer number (15651090).

Almost surely, 2^677720472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 677720472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1001669760).

677720472 is an abundant number, since it is smaller than the sum of its proper divisors (1325619048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

677720472 is a wasteful number, since it uses less digits than its factorization.

677720472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305 (or 1301 counting only the distinct ones).

The product of its (nonzero) digits is 230496, while the sum is 42.

The square root of 677720472 is about 26033.0649751427. The cubic root of 677720472 is about 878.3822171011.

The spelling of 677720472 in words is "six hundred seventy-seven million, seven hundred twenty thousand, four hundred seventy-two".