690051960 has 384 divisors, whose sum is σ = 2583060480. Its totient is φ = 164602368.

The previous prime is 690051931. The next prime is 690052001. The reversal of 690051960 is 69150096.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5433417 + ... + 5433543.

It is an arithmetic number, because the mean of its divisors is an integer number (6726720).

Almost surely, 2^690051960 is an apocalyptic number.

690051960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690051960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1291530240).

690051960 is an abundant number, since it is smaller than the sum of its proper divisors (1893008520).

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

690051960 is a wasteful number, since it uses less digits than its factorization.

690051960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 690051960 is about 26268.8400962052. The cubic root of 690051960 is about 883.6777727196.

The spelling of 690051960 in words is "six hundred ninety million, fifty-one thousand, nine hundred sixty".