70730739 has 24 divisors (see below), whose sum is σ = 109614960. Its totient is φ = 45523296.

The previous prime is 70730731. The next prime is 70730741. The reversal of 70730739 is 93703707.

It is not a de Polignac number, because 70730739 - 2³ = 70730731 is a prime.

It is a super-2 number, since 2×70730739² = 10005674878972242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70730731) 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, 2029 + ... + 12065.

It is an arithmetic number, because the mean of its divisors is an integer number (4567290).

Almost surely, 2^70730739 is an apocalyptic number.

70730739 is a deficient number, since it is larger than the sum of its proper divisors (38884221).

70730739 is a wasteful number, since it uses less digits than its factorization.

70730739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10081 (or 10069 counting only the distinct ones).

The product of its (nonzero) digits is 27783, while the sum is 36.

The square root of 70730739 is about 8410.1568950882. The cubic root of 70730739 is about 413.5576560844.

The spelling of 70730739 in words is "seventy million, seven hundred thirty thousand, seven hundred thirty-nine".