70561782 has 36 divisors (see below), whose sum is σ = 161368740. Its totient is φ = 22280616.

The previous prime is 70561741. The next prime is 70561793. The reversal of 70561782 is 28716507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1069 + ... + 11927.

It is an arithmetic number, because the mean of its divisors is an integer number (4482465).

Almost surely, 2^70561782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70561782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80684370).

70561782 is an abundant number, since it is smaller than the sum of its proper divisors (90806958).

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

70561782 is a wasteful number, since it uses less digits than its factorization.

70561782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10905 (or 10883 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 70561782 is about 8400.1060707589. The cubic root of 70561782 is about 413.2281003060.

The spelling of 70561782 in words is "seventy million, five hundred sixty-one thousand, seven hundred eighty-two".