690348378 has 32 divisors (see below), whose sum is σ = 1404739584. Its totient is φ = 226143792.

The previous prime is 690348377. The next prime is 690348383. The reversal of 690348378 is 873843096.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (690348377) 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, 77301 + ... + 85767.

It is an arithmetic number, because the mean of its divisors is an integer number (43898112).

Almost surely, 2^690348378 is an apocalyptic number.

690348378 is an abundant number, since it is smaller than the sum of its proper divisors (714391206).

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

690348378 is a wasteful number, since it uses less digits than its factorization.

690348378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8706.

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 690348378 is about 26274.4814982142. The cubic root of 690348378 is about 883.8042851739.

The spelling of 690348378 in words is "six hundred ninety million, three hundred forty-eight thousand, three hundred seventy-eight".