698051 has 2 divisors, whose sum is σ = 698052. Its totient is φ = 698050.

The previous prime is 698039. The next prime is 698053. The reversal of 698051 is 150896.

698051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 698051 - 2¹⁸ = 435907 is a prime.

It is a Sophie Germain prime.

Together with 698053, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (698053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349025 + 349026.

It is an arithmetic number, because the mean of its divisors is an integer number (349026).

2⁶⁹⁸⁰⁵¹ is an apocalyptic number.

698051 is a deficient number, since it is larger than the sum of its proper divisors (1).

698051 is an equidigital number, since it uses as much as digits as its factorization.

698051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 698051 is about 835.4944643742. The cubic root of 698051 is about 88.7079176276.

The spelling of 698051 in words is "six hundred ninety-eight thousand, fifty-one".