70471764 has 72 divisors (see below), whose sum is σ = 195380640. Its totient is φ = 21240000.

The previous prime is 70471733. The next prime is 70471777. The reversal of 70471764 is 46717407.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99042 + ... + 99750.

It is an arithmetic number, because the mean of its divisors is an integer number (2713620).

Almost surely, 2^70471764 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 70471764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97690320).

70471764 is an abundant number, since it is smaller than the sum of its proper divisors (124908876).

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

70471764 is a wasteful number, since it uses less digits than its factorization.

70471764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981 (or 976 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 70471764 is about 8394.7462141508. The cubic root of 70471764 is about 413.0523026077.

The spelling of 70471764 in words is "seventy million, four hundred seventy-one thousand, seven hundred sixty-four".