690229464 has 64 divisors (see below), whose sum is σ = 1826668800. Its totient is φ = 216967296.

The previous prime is 690229459. The next prime is 690229469. The reversal of 690229464 is 464922096.

It is an interprime number because it is at equal distance from previous prime (690229459) and next prime (690229469).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690229469) 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, 18397 + ... + 41459.

It is an arithmetic number, because the mean of its divisors is an integer number (28541700).

Almost surely, 2^690229464 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 690229464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (913334400).

690229464 is an abundant number, since it is smaller than the sum of its proper divisors (1136439336).

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

690229464 is a wasteful number, since it uses less digits than its factorization.

690229464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23144 (or 23140 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 690229464 is about 26272.2184826482. The cubic root of 690229464 is about 883.7535365272.

The spelling of 690229464 in words is "six hundred ninety million, two hundred twenty-nine thousand, four hundred sixty-four".