690427392 has 160 divisors (see below), whose sum is σ = 1971918432. Its totient is φ = 213909504.

The previous prime is 690427391. The next prime is 690427433. The reversal of 690427392 is 293724096.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690427391) 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, 3577248 + ... + 3577440.

Almost surely, 2^690427392 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 690427392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (985959216).

690427392 is an abundant number, since it is smaller than the sum of its proper divisors (1281491040).

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

690427392 is a wasteful number, since it uses less digits than its factorization.

690427392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 690427392 is about 26275.9850814389. The cubic root of 690427392 is about 883.8380025693.

The spelling of 690427392 in words is "six hundred ninety million, four hundred twenty-seven thousand, three hundred ninety-two".