68770520 has 96 divisors (see below), whose sum is σ = 193914000. Its totient is φ = 21756672.

The previous prime is 68770517. The next prime is 68770523. The reversal of 68770520 is 2507786.

It is an interprime number because it is at equal distance from previous prime (68770517) and next prime (68770523).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68770523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24131 + ... + 26829.

Almost surely, 2^68770520 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 68770520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96957000).

68770520 is an abundant number, since it is smaller than the sum of its proper divisors (125143480).

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

68770520 is a wasteful number, since it uses less digits than its factorization.

68770520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2737 (or 2726 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 68770520 is about 8292.7992861277. The cubic root of 68770520 is about 409.7013887550.

It can be divided in two parts, 68770 and 520, that multiplied together give a square (35760400 = 5980²).

The spelling of 68770520 in words is "sixty-eight million, seven hundred seventy thousand, five hundred twenty".