70781416 has 16 divisors (see below), whose sum is σ = 135952740. Its totient is φ = 34527360.

The previous prime is 70781383. The next prime is 70781437. The reversal of 70781416 is 61418707.

It can be written as a sum of positive squares in 2 ways, for example, as 67732900 + 3048516 = 8230^2 + 1746^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107571 + ... + 108226.

Almost surely, 2^70781416 is an apocalyptic number.

It is an amenable number.

70781416 is a deficient number, since it is larger than the sum of its proper divisors (65171324).

70781416 is a wasteful number, since it uses less digits than its factorization.

70781416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215844 (or 215840 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 70781416 is about 8413.1692007234. The cubic root of 70781416 is about 413.6564007902.

The spelling of 70781416 in words is "seventy million, seven hundred eighty-one thousand, four hundred sixteen".