690929481293 has 2 divisors, whose sum is σ = 690929481294. Its totient is φ = 690929481292.

The previous prime is 690929481289. The next prime is 690929481301. The reversal of 690929481293 is 392184929096.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 606549688969 + 84379792324 = 778813^2 + 290482^2 .

It is a cyclic number.

It is not a de Polignac number, because 690929481293 - 2² = 690929481289 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (690929481233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345464740646 + 345464740647.

It is an arithmetic number, because the mean of its divisors is an integer number (345464740647).

Almost surely, 2^690929481293 is an apocalyptic number.

It is an amenable number.

690929481293 is a deficient number, since it is larger than the sum of its proper divisors (1).

690929481293 is an equidigital number, since it uses as much as digits as its factorization.

690929481293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15116544, while the sum is 62.

The spelling of 690929481293 in words is "six hundred ninety billion, nine hundred twenty-nine million, four hundred eighty-one thousand, two hundred ninety-three".