97815701 has 4 divisors (see below), whose sum is σ = 98765472. Its totient is φ = 96865932.

The previous prime is 97815689. The next prime is 97815703. The reversal of 97815701 is 10751879.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10751879 = 23 ⋅467473.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97815701 is a prime.

It is a super-2 number, since 2×97815701² = 19135822724242802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97815703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474731 + ... + 474936.

It is an arithmetic number, because the mean of its divisors is an integer number (24691368).

Almost surely, 2^97815701 is an apocalyptic number.

It is an amenable number.

97815701 is a deficient number, since it is larger than the sum of its proper divisors (949771).

97815701 is a wasteful number, since it uses less digits than its factorization.

97815701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949770.

The product of its (nonzero) digits is 17640, while the sum is 38.

The square root of 97815701 is about 9890.1820509028. The cubic root of 97815701 is about 460.7544346467.

The spelling of 97815701 in words is "ninety-seven million, eight hundred fifteen thousand, seven hundred one".