699428674645 has 8 divisors (see below), whose sum is σ = 841183709400. Its totient is φ = 558296739840.

The previous prime is 699428674643. The next prime is 699428674649. The reversal of 699428674645 is 546476824996.

699428674645 = 591366² + 591367².

It can be written as a sum of positive squares in 4 ways, for example, as 8744681169 + 690683993476 = 93513^2 + 831074^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 699428674645 - 2¹ = 699428674643 is a prime.

It is a super-2 number, since 2×699428674645² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699428674643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155772516 + ... + 155777005.

It is an arithmetic number, because the mean of its divisors is an integer number (105147963675).

Almost surely, 2^699428674645 is an apocalyptic number.

699428674645 is the 591367-th centered square number.

It is an amenable number.

699428674645 is a deficient number, since it is larger than the sum of its proper divisors (141755034755).

699428674645 is a wasteful number, since it uses less digits than its factorization.

699428674645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311549975.

The product of its digits is 627056640, while the sum is 70.

The spelling of 699428674645 in words is "six hundred ninety-nine billion, four hundred twenty-eight million, six hundred seventy-four thousand, six hundred forty-five".