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9978601 is a prime number
BaseRepresentation
bin100110000100…
…001011101001
3200202222001211
4212010023221
510023303401
6553513121
7150550063
oct46041351
920688054
109978601
1156a6086
1234127a1
1320b4bc9
14147a733
15d21951
hex9842e9

9978601 has 2 divisors, whose sum is σ = 9978602. Its totient is φ = 9978600.

The previous prime is 9978599. The next prime is 9978607. The reversal of 9978601 is 1068799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9211225 + 767376 = 3035^2 + 876^2 .

It is a cyclic number.

It is not a de Polignac number, because 9978601 - 21 = 9978599 is a prime.

Together with 9978599, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9978607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4989300 + 4989301.

It is an arithmetic number, because the mean of its divisors is an integer number (4989301).

Almost surely, 29978601 is an apocalyptic number.

It is an amenable number.

9978601 is a deficient number, since it is larger than the sum of its proper divisors (1).

9978601 is an equidigital number, since it uses as much as digits as its factorization.

9978601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 9978601 is about 3158.8923691699. The cubic root of 9978601 is about 215.2896834293.

The spelling of 9978601 in words is "nine million, nine hundred seventy-eight thousand, six hundred one".