690351155287 has 4 divisors (see below), whose sum is σ = 690611963056. Its totient is φ = 690090347520.

The previous prime is 690351155261. The next prime is 690351155297. The reversal of 690351155287 is 782551153096.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-690351155287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690351155297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130399914 + ... + 130405207.

It is an arithmetic number, because the mean of its divisors is an integer number (172652990764).

Almost surely, 2^690351155287 is an apocalyptic number.

690351155287 is a deficient number, since it is larger than the sum of its proper divisors (260807769).

690351155287 is a wasteful number, since it uses less digits than its factorization.

690351155287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260807768.

The product of its (nonzero) digits is 2268000, while the sum is 52.

The spelling of 690351155287 in words is "six hundred ninety billion, three hundred fifty-one million, one hundred fifty-five thousand, two hundred eighty-seven".