797561016 has 128 divisors (see below), whose sum is σ = 2377728000. Its totient is φ = 218115072.

The previous prime is 797561003. The next prime is 797561021. The reversal of 797561016 is 610165797.

797561016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×797561016² = 1272207148485904512, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 618100 + ... + 619388.

It is an arithmetic number, because the mean of its divisors is an integer number (18576000).

Almost surely, 2^797561016 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 797561016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1188864000).

797561016 is an abundant number, since it is smaller than the sum of its proper divisors (1580166984).

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

797561016 is a wasteful number, since it uses less digits than its factorization.

797561016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461 (or 1457 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 797561016 is about 28241.1227822125. The cubic root of 797561016 is about 927.3734096331.

The spelling of 797561016 in words is "seven hundred ninety-seven million, five hundred sixty-one thousand, sixteen".