83667601 has 2 divisors, whose sum is σ = 83667602. Its totient is φ = 83667600.

The previous prime is 83667547. The next prime is 83667611. The reversal of 83667601 is 10676638.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81432576 + 2235025 = 9024^2 + 1495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83667601 is a prime.

It is not a weakly prime, because it can be changed into another prime (83667611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41833800 + 41833801.

It is an arithmetic number, because the mean of its divisors is an integer number (41833801).

Almost surely, 2^83667601 is an apocalyptic number.

It is an amenable number.

83667601 is a deficient number, since it is larger than the sum of its proper divisors (1).

83667601 is an equidigital number, since it uses as much as digits as its factorization.

83667601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 83667601 is about 9146.9995626981. Note that the first 3 decimals coincide. The cubic root of 83667601 is about 437.3734726356.

The spelling of 83667601 in words is "eighty-three million, six hundred sixty-seven thousand, six hundred one".