690722005 has 16 divisors (see below), whose sum is σ = 856627200. Its totient is φ = 534113280.

The previous prime is 690722003. The next prime is 690722041. The reversal of 690722005 is 500227096.

690722005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 690722005 - 2¹ = 690722003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690722003) 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, 158901 + ... + 163189.

It is an arithmetic number, because the mean of its divisors is an integer number (53539200).

Almost surely, 2^690722005 is an apocalyptic number.

It is an amenable number.

690722005 is a deficient number, since it is larger than the sum of its proper divisors (165905195).

690722005 is a wasteful number, since it uses less digits than its factorization.

690722005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5364.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 690722005 is about 26281.5906101590. The cubic root of 690722005 is about 883.9636991741.

The spelling of 690722005 in words is "six hundred ninety million, seven hundred twenty-two thousand, five".