97654321 has 2 divisors, whose sum is σ = 97654322. Its totient is φ = 97654320.

The previous prime is 97654313. The next prime is 97654331. The reversal of 97654321 is 12345679.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85655025 + 11999296 = 9255^2 + 3464^2 .

It is a cyclic number.

It is not a de Polignac number, because 97654321 - 2³ = 97654313 is a prime.

It is a nialpdrome in base 10.

It is not a weakly prime, because it can be changed into another prime (97654301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48827160 + 48827161.

It is an arithmetic number, because the mean of its divisors is an integer number (48827161).

Almost surely, 2^97654321 is an apocalyptic number.

It is an amenable number.

97654321 is a deficient number, since it is larger than the sum of its proper divisors (1).

97654321 is an equidigital number, since it uses as much as digits as its factorization.

97654321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 97654321 is about 9882.0200870065. The cubic root of 97654321 is about 460.5009052048.

The spelling of 97654321 in words is "ninety-seven million, six hundred fifty-four thousand, three hundred twenty-one".