690462863 has 2 divisors, whose sum is σ = 690462864. Its totient is φ = 690462862.

The previous prime is 690462841. The next prime is 690462881. The reversal of 690462863 is 368264096.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 690462863 - 2¹⁴ = 690446479 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (690462823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345231431 + 345231432.

It is an arithmetic number, because the mean of its divisors is an integer number (345231432).

Almost surely, 2^690462863 is an apocalyptic number.

690462863 is a deficient number, since it is larger than the sum of its proper divisors (1).

690462863 is an equidigital number, since it uses as much as digits as its factorization.

690462863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 690462863 is about 26276.6600427071. The cubic root of 690462863 is about 883.8531381608.

The spelling of 690462863 in words is "six hundred ninety million, four hundred sixty-two thousand, eight hundred sixty-three".