690051216 has 80 divisors (see below), whose sum is σ = 1892075328. Its totient is φ = 215961600.

The previous prime is 690051211. The next prime is 690051217. The reversal of 690051216 is 612150096.

It is not an unprimeable number, because it can be changed into a prime (690051211) 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, 465196 + ... + 466676.

Almost surely, 2^690051216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690051216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (946037664).

690051216 is an abundant number, since it is smaller than the sum of its proper divisors (1202024112).

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

690051216 is a wasteful number, since it uses less digits than its factorization.

690051216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080 (or 2074 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 690051216 is about 26268.8259349366. The cubic root of 690051216 is about 883.6774551317.

The spelling of 690051216 in words is "six hundred ninety million, fifty-one thousand, two hundred sixteen".