97694640 has 160 divisors (see below), whose sum is σ = 347596800. Its totient is φ = 25194240.

The previous prime is 97694633. The next prime is 97694647. The reversal of 97694640 is 4649679.

It is an interprime number because it is at equal distance from previous prime (97694633) and next prime (97694647).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (97694647) 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, 66231 + ... + 67689.

It is an arithmetic number, because the mean of its divisors is an integer number (2172480).

Almost surely, 2^97694640 is an apocalyptic number.

97694640 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 97694640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173798400).

97694640 is an abundant number, since it is smaller than the sum of its proper divisors (249902160).

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

97694640 is a wasteful number, since it uses less digits than its factorization.

97694640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512 (or 1500 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 97694640 is about 9884.0598945980. The cubic root of 97694640 is about 460.5642728780.

The spelling of 97694640 in words is "ninety-seven million, six hundred ninety-four thousand, six hundred forty".