617698480 has 80 divisors (see below), whose sum is σ = 1644448320. Its totient is φ = 211378176.

The previous prime is 617698441. The next prime is 617698489. The reversal of 617698480 is 84896716.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (617698489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546556 + ... + 547684.

It is an arithmetic number, because the mean of its divisors is an integer number (20555604).

Almost surely, 2^617698480 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 617698480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (822224160).

617698480 is an abundant number, since it is smaller than the sum of its proper divisors (1026749840).

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

617698480 is a wasteful number, since it uses less digits than its factorization.

617698480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126 (or 2120 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 617698480 is about 24853.5405928411. The cubic root of 617698480 is about 851.6454768994.

The spelling of 617698480 in words is "six hundred seventeen million, six hundred ninety-eight thousand, four hundred eighty".