97345686640 has 240 divisors, whose sum is σ = 242959137120. Its totient is φ = 36245299200.

The previous prime is 97345686631. The next prime is 97345686649. The reversal of 97345686640 is 4668654379.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (97345686631) and next prime (97345686649).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97345686649) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 280534947 + ... + 280535293.

It is an arithmetic number, because the mean of its divisors is an integer number (1012329738).

Almost surely, 2^97345686640 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 97345686640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121479568560).

97345686640 is an abundant number, since it is smaller than the sum of its proper divisors (145613450480).

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

97345686640 is a wasteful number, since it uses less digits than its factorization.

97345686640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 58.

The spelling of 97345686640 in words is "ninety-seven billion, three hundred forty-five million, six hundred eighty-six thousand, six hundred forty".