97747650 has 432 divisors, whose sum is σ = 370476288. Its totient is φ = 18144000.

The previous prime is 97747633. The next prime is 97747651. The reversal of 97747650 is 5674779.

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

It is a junction number, because it is equal to n+sod(n) for n = 97747596 and 97747605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97747651) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 3153135 + ... + 3153165.

It is an arithmetic number, because the mean of its divisors is an integer number (857584).

Almost surely, 2^97747650 is an apocalyptic number.

97747650 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 97747650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185238144).

97747650 is an abundant number, since it is smaller than the sum of its proper divisors (272728638).

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

97747650 is a wasteful number, since it uses less digits than its factorization.

97747650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 45.

The square root of 97747650 is about 9886.7411213200. The cubic root of 97747650 is about 460.6475599365.

It can be divided in two parts, 9774 and 7650, that added together give a square (17424 = 132²).

The spelling of 97747650 in words is "ninety-seven million, seven hundred forty-seven thousand, six hundred fifty".