97751620 has 12 divisors (see below), whose sum is σ = 205278444. Its totient is φ = 39100640.

The previous prime is 97751609. The next prime is 97751629. The reversal of 97751620 is 2615779.

It can be written as a sum of positive squares in 2 ways, for example, as 76073284 + 21678336 = 8722^2 + 4656^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 97751620.

It is not an unprimeable number, because it can be changed into a prime (97751629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2443771 + ... + 2443810.

It is an arithmetic number, because the mean of its divisors is an integer number (17106537).

Almost surely, 2^97751620 is an apocalyptic number.

It is an amenable number.

97751620 is an abundant number, since it is smaller than the sum of its proper divisors (107526824).

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

97751620 is a wasteful number, since it uses less digits than its factorization.

97751620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4887590 (or 4887588 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 97751620 is about 9886.9418932246. The cubic root of 97751620 is about 460.6537962196.

The spelling of 97751620 in words is "ninety-seven million, seven hundred fifty-one thousand, six hundred twenty".