97776001 has 2 divisors, whose sum is σ = 97776002. Its totient is φ = 97776000.

The previous prime is 97775999. The next prime is 97776011. The reversal of 97776001 is 10067779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91699776 + 6076225 = 9576^2 + 2465^2 .

It is a cyclic number.

It is not a de Polignac number, because 97776001 - 2¹ = 97775999 is a prime.

Together with 97775999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (97776011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48888000 + 48888001.

It is an arithmetic number, because the mean of its divisors is an integer number (48888001).

Almost surely, 2^97776001 is an apocalyptic number.

It is an amenable number.

97776001 is a deficient number, since it is larger than the sum of its proper divisors (1).

97776001 is an equidigital number, since it uses as much as digits as its factorization.

97776001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18522, while the sum is 37.

The square root of 97776001 is about 9888.1748063027. The cubic root of 97776001 is about 460.6920914642.

The spelling of 97776001 in words is "ninety-seven million, seven hundred seventy-six thousand, one".