690462144 has 112 divisors (see below), whose sum is σ = 2055307040. Its totient is φ = 230107392.

The previous prime is 690462127. The next prime is 690462151. The reversal of 690462144 is 441264096.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 690462099 and 690462108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137502 + ... + 142434.

Almost surely, 2^690462144 is an apocalyptic number.

690462144 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690462144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1027653520).

690462144 is an abundant number, since it is smaller than the sum of its proper divisors (1364844896).

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

690462144 is an frugal number, since it uses more digits than its factorization.

690462144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4966 (or 4938 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 690462144 is about 26276.6463613605. The cubic root of 690462144 is about 883.8528313663.

The spelling of 690462144 in words is "six hundred ninety million, four hundred sixty-two thousand, one hundred forty-four".