690111984 has 20 divisors (see below), whose sum is σ = 1782789416. Its totient is φ = 230037312.

The previous prime is 690111943. The next prime is 690112001. The reversal of 690111984 is 489111096.

It is a congruent number.

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, 7188619 + ... + 7188714.

Almost surely, 2^690111984 is an apocalyptic number.

It is an amenable number.

690111984 is an abundant number, since it is smaller than the sum of its proper divisors (1092677432).

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

690111984 is a wasteful number, since it uses less digits than its factorization.

690111984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14377344 (or 14377338 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 690111984 is about 26269.9825656585. The cubic root of 690111984 is about 883.7033941413.

The spelling of 690111984 in words is "six hundred ninety million, one hundred eleven thousand, nine hundred eighty-four".