70780734 has 24 divisors (see below), whose sum is σ = 153513360. Its totient is φ = 23569728.

The previous prime is 70780693. The next prime is 70780739. The reversal of 70780734 is 43708707.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70780739) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32182 + ... + 34310.

It is an arithmetic number, because the mean of its divisors is an integer number (6396390).

Almost surely, 2^70780734 is an apocalyptic number.

70780734 is an abundant number, since it is smaller than the sum of its proper divisors (82732626).

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

70780734 is a wasteful number, since it uses less digits than its factorization.

70780734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3984 (or 3981 counting only the distinct ones).

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

The square root of 70780734 is about 8413.1286689317. The cubic root of 70780734 is about 413.6550722185.

The spelling of 70780734 in words is "seventy million, seven hundred eighty thousand, seven hundred thirty-four".