690959478 has 16 divisors (see below), whose sum is σ = 1507548096. Its totient is φ = 209381640.

The previous prime is 690959447. The next prime is 690959519. The reversal of 690959478 is 874959096.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5234476 + ... + 5234607.

It is an arithmetic number, because the mean of its divisors is an integer number (94221756).

Almost surely, 2^690959478 is an apocalyptic number.

690959478 is an abundant number, since it is smaller than the sum of its proper divisors (816588618).

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

690959478 is a wasteful number, since it uses less digits than its factorization.

690959478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10469099.

The product of its (nonzero) digits is 4898880, while the sum is 57.

The square root of 690959478 is about 26286.1080801248. The cubic root of 690959478 is about 884.0649909904.

The spelling of 690959478 in words is "six hundred ninety million, nine hundred fifty-nine thousand, four hundred seventy-eight".