709950780 has 288 divisors, whose sum is σ = 2709278208. Its totient is φ = 146188800.

The previous prime is 709950763. The next prime is 709950803. The reversal of 709950780 is 87059907.

It is a super-2 number, since 2×709950780² = 1008060220045216800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 2508519 + ... + 2508801.

It is an arithmetic number, because the mean of its divisors is an integer number (9407216).

Almost surely, 2^709950780 is an apocalyptic number.

709950780 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 709950780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1354639104).

709950780 is an abundant number, since it is smaller than the sum of its proper divisors (1999327428).

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

709950780 is a wasteful number, since it uses less digits than its factorization.

709950780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The square root of 709950780 is about 26644.9015760989. The cubic root of 709950780 is about 892.0915250587.

The spelling of 709950780 in words is "seven hundred nine million, nine hundred fifty thousand, seven hundred eighty".