690220608 has 112 divisors (see below), whose sum is σ = 2276880384. Its totient is φ = 179274240.

The previous prime is 690220603. The next prime is 690220631. The reversal of 690220608 is 806022096.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (690220603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8560 + ... + 38127.

Almost surely, 2^690220608 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 690220608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1138440192).

690220608 is an abundant number, since it is smaller than the sum of its proper divisors (1586659776).

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

690220608 is a wasteful number, since it uses less digits than its factorization.

690220608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46720 (or 46710 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 690220608 is about 26272.0499390512. The cubic root of 690220608 is about 883.7497568398.

The spelling of 690220608 in words is "six hundred ninety million, two hundred twenty thousand, six hundred eight".