690837420 has 192 divisors, whose sum is σ = 2463390720. Its totient is φ = 140700672.

The previous prime is 690837419. The next prime is 690837463. The reversal of 690837420 is 24738096.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 156159 + ... + 160521.

It is an arithmetic number, because the mean of its divisors is an integer number (12830160).

Almost surely, 2^690837420 is an apocalyptic number.

690837420 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 690837420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1231695360).

690837420 is an abundant number, since it is smaller than the sum of its proper divisors (1772553300).

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

690837420 is a wasteful number, since it uses less digits than its factorization.

690837420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4424 (or 4422 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 690837420 is about 26283.7862569303. The cubic root of 690837420 is about 884.0129312278.

The spelling of 690837420 in words is "six hundred ninety million, eight hundred thirty-seven thousand, four hundred twenty".