690528054 has 16 divisors (see below), whose sum is σ = 1386155520. Its totient is φ = 229326120.

The previous prime is 690528053. The next prime is 690528067. The reversal of 690528054 is 450825096.

690528054 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×690528054² = 953657986722053832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690528053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210714 + ... + 213965.

It is an arithmetic number, because the mean of its divisors is an integer number (86634720).

Almost surely, 2^690528054 is an apocalyptic number.

690528054 is an abundant number, since it is smaller than the sum of its proper divisors (695627466).

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

690528054 is a wasteful number, since it uses less digits than its factorization.

690528054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424955.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 690528054 is about 26277.9004869111. The cubic root of 690528054 is about 883.8809540216.

The spelling of 690528054 in words is "six hundred ninety million, five hundred twenty-eight thousand, fifty-four".