706992720 has 160 divisors (see below), whose sum is σ = 2519838720. Its totient is φ = 160627200.

The previous prime is 706992677. The next prime is 706992731. The reversal of 706992720 is 27299607.

It is a super-2 number, since 2×706992720² = 999677412265996800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 299545 + ... + 301895.

It is an arithmetic number, because the mean of its divisors is an integer number (15748992).

Almost surely, 2^706992720 is an apocalyptic number.

706992720 is a gapful number since it is divisible by the number (70) 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 706992720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1259919360).

706992720 is an abundant number, since it is smaller than the sum of its proper divisors (1812846000).

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

706992720 is a wasteful number, since it uses less digits than its factorization.

706992720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553 (or 2547 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 706992720 is about 26589.3347039748. The cubic root of 706992720 is about 890.8508128678.

The spelling of 706992720 in words is "seven hundred six million, nine hundred ninety-two thousand, seven hundred twenty".