837145663 has 2 divisors, whose sum is σ = 837145664. Its totient is φ = 837145662.

The previous prime is 837145657. The next prime is 837145693. The reversal of 837145663 is 366541738.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-837145663 is a prime.

It is a super-2 number, since 2×837145663² = 1401625722159419138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (837145613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 418572831 + 418572832.

It is an arithmetic number, because the mean of its divisors is an integer number (418572832).

Almost surely, 2^837145663 is an apocalyptic number.

837145663 is a deficient number, since it is larger than the sum of its proper divisors (1).

837145663 is an equidigital number, since it uses as much as digits as its factorization.

837145663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 43.

The square root of 837145663 is about 28933.4695983734. The cubic root of 837145663 is about 942.4688619526.

The spelling of 837145663 in words is "eight hundred thirty-seven million, one hundred forty-five thousand, six hundred sixty-three".