690793488 has 320 divisors, whose sum is σ = 2604595200. Its totient is φ = 169827840.

The previous prime is 690793471. The next prime is 690793549. The reversal of 690793488 is 884397096.

690793488 is a `hidden beast` number, since 6 + 90 + 79 + 3 + 488 = 666.

It is a super-2 number, since 2×690793488² = 954391286126412288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 631470 + ... + 632562.

It is an arithmetic number, because the mean of its divisors is an integer number (8139360).

Almost surely, 2^690793488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690793488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1302297600).

690793488 is an abundant number, since it is smaller than the sum of its proper divisors (1913801712).

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

690793488 is a wasteful number, since it uses less digits than its factorization.

690793488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147 (or 1135 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 690793488 is about 26282.9505193005. The cubic root of 690793488 is about 883.9941920000.

The spelling of 690793488 in words is "six hundred ninety million, seven hundred ninety-three thousand, four hundred eighty-eight".