690007122 has 72 divisors (see below), whose sum is σ = 1781610012. Its totient is φ = 192326400.

The previous prime is 690007103. The next prime is 690007139. The reversal of 690007122 is 221700096.

It can be written as a sum of positive squares in 2 ways, for example, as 552203001 + 137804121 = 23499^2 + 11739^2 .

It is a super-2 number, since 2×690007122² = 952219656821445768, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 26622 + ... + 45702.

Almost surely, 2^690007122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690007122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (890805006).

690007122 is an abundant number, since it is smaller than the sum of its proper divisors (1091602890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

690007122 is a wasteful number, since it uses less digits than its factorization.

690007122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19144 (or 19134 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 690007122 is about 26267.9866377307. The cubic root of 690007122 is about 883.6586325174.

The spelling of 690007122 in words is "six hundred ninety million, seven thousand, one hundred twenty-two".