698132551 has 2 divisors, whose sum is σ = 698132552. Its totient is φ = 698132550.

The previous prime is 698132549. The next prime is 698132569. The reversal of 698132551 is 155231896.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 698132551 - 2¹ = 698132549 is a prime.

Together with 698132549, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (698132951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349066275 + 349066276.

It is an arithmetic number, because the mean of its divisors is an integer number (349066276).

Almost surely, 2^698132551 is an apocalyptic number.

698132551 is a deficient number, since it is larger than the sum of its proper divisors (1).

698132551 is an equidigital number, since it uses as much as digits as its factorization.

698132551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 40.

The square root of 698132551 is about 26422.1980728326. The cubic root of 698132551 is about 887.1137197771.

The spelling of 698132551 in words is "six hundred ninety-eight million, one hundred thirty-two thousand, five hundred fifty-one".