97669840 has 40 divisors (see below), whose sum is σ = 234413568. Its totient is φ = 37806720.

The previous prime is 97669711. The next prime is 97669841. The reversal of 97669840 is 4896679.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97669841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17212 + ... + 22171.

Almost surely, 2^97669840 is an apocalyptic number.

It is an amenable number.

97669840 is an abundant number, since it is smaller than the sum of its proper divisors (136743728).

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

97669840 is a wasteful number, since it uses less digits than its factorization.

97669840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39427 (or 39421 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 97669840 is about 9882.8052697602. The cubic root of 97669840 is about 460.5252978275.

The spelling of 97669840 in words is "ninety-seven million, six hundred sixty-nine thousand, eight hundred forty".