690064554 has 8 divisors (see below), whose sum is σ = 1380129120. Its totient is φ = 230021516.

The previous prime is 690064537. The next prime is 690064579. The reversal of 690064554 is 455460096.

It is a sphenic number, since it is the product of 3 distinct primes.

690064554 is an admirable number.

It is a super-3 number, since 3×690064554³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57505374 + ... + 57505385.

It is an arithmetic number, because the mean of its divisors is an integer number (172516140).

Almost surely, 2^690064554 is an apocalyptic number.

690064554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

690064554 is a wasteful number, since it uses less digits than its factorization.

690064554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115010764.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 690064554 is about 26269.0798087790. The cubic root of 690064554 is about 883.6831486289.

The spelling of 690064554 in words is "six hundred ninety million, sixty-four thousand, five hundred fifty-four".