97030721 has 8 divisors (see below), whose sum is σ = 101632320. Its totient is φ = 92461072.

The previous prime is 97030711. The next prime is 97030729. The reversal of 97030721 is 12703079.

It is a happy number.

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 97030721 - 2⁶ = 97030657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97030729) 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, 1655 + ... + 14028.

It is an arithmetic number, because the mean of its divisors is an integer number (12704040).

Almost surely, 2^97030721 is an apocalyptic number.

It is an amenable number.

97030721 is a deficient number, since it is larger than the sum of its proper divisors (4601599).

97030721 is a wasteful number, since it uses less digits than its factorization.

97030721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15975.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 97030721 is about 9850.4173008051. The cubic root of 97030721 is about 459.5185905633.

The spelling of 97030721 in words is "ninety-seven million, thirty thousand, seven hundred twenty-one".