690668461071 has 16 divisors (see below), whose sum is σ = 1023826406400. Its totient is φ = 460169398584.

The previous prime is 690668461069. The next prime is 690668461073. The reversal of 690668461071 is 170164866096.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (690668461069) and next prime (690668461073).

It is not a de Polignac number, because 690668461071 - 2¹ = 690668461069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 690668460999 and 690668461017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690668461073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7627551 + ... + 7717568.

It is an arithmetic number, because the mean of its divisors is an integer number (63989150400).

Almost surely, 2^690668461071 is an apocalyptic number.

690668461071 is a deficient number, since it is larger than the sum of its proper divisors (333157945329).

690668461071 is a wasteful number, since it uses less digits than its factorization.

690668461071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15346795 (or 15346789 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 690668461071 in words is "six hundred ninety billion, six hundred sixty-eight million, four hundred sixty-one thousand, seventy-one".