97727580 has 96 divisors (see below), whose sum is σ = 306492480. Its totient is φ = 25850880.

The previous prime is 97727579. The next prime is 97727587. The reversal of 97727580 is 8572779.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97727587) 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, 73320 + ... + 74640.

It is an arithmetic number, because the mean of its divisors is an integer number (3192630).

Almost surely, 2^97727580 is an apocalyptic number.

97727580 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97727580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153246240).

97727580 is an abundant number, since it is smaller than the sum of its proper divisors (208764900).

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

97727580 is a wasteful number, since it uses less digits than its factorization.

97727580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476 (or 1468 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 45.

The square root of 97727580 is about 9885.7260734860. The cubic root of 97727580 is about 460.6160303487.

The spelling of 97727580 in words is "ninety-seven million, seven hundred twenty-seven thousand, five hundred eighty".