690462841 has 2 divisors, whose sum is σ = 690462842. Its totient is φ = 690462840.

The previous prime is 690462833. The next prime is 690462863. The reversal of 690462841 is 148264096.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 471541225 + 218921616 = 21715^2 + 14796^2 .

It is a cyclic number.

It is not a de Polignac number, because 690462841 - 2³ = 690462833 is a prime.

It is equal to p_35784616 and since 690462841 and 35784616 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 690462794 and 690462803.

It is not a weakly prime, because it can be changed into another prime (690462821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345231420 + 345231421.

It is an arithmetic number, because the mean of its divisors is an integer number (345231421).

Almost surely, 2^690462841 is an apocalyptic number.

It is an amenable number.

690462841 is a deficient number, since it is larger than the sum of its proper divisors (1).

690462841 is an equidigital number, since it uses as much as digits as its factorization.

690462841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 690462841 is about 26276.6596240846. The cubic root of 690462841 is about 883.8531287735.

The spelling of 690462841 in words is "six hundred ninety million, four hundred sixty-two thousand, eight hundred forty-one".