97807421 has 8 divisors (see below), whose sum is σ = 103370400. Its totient is φ = 92286000.

The previous prime is 97807403. The next prime is 97807433. The reversal of 97807421 is 12470879.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97807421 - 2⁶ = 97807357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97807121) 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, 5486 + ... + 15023.

It is an arithmetic number, because the mean of its divisors is an integer number (12921300).

Almost surely, 2^97807421 is an apocalyptic number.

It is an amenable number.

97807421 is a deficient number, since it is larger than the sum of its proper divisors (5562979).

97807421 is a wasteful number, since it uses less digits than its factorization.

97807421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20779.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 97807421 is about 9889.7634450982. The cubic root of 97807421 is about 460.7414334812.

The spelling of 97807421 in words is "ninety-seven million, eight hundred seven thousand, four hundred twenty-one".