70798739 has 8 divisors (see below), whose sum is σ = 77458032. Its totient is φ = 64176640.

The previous prime is 70798733. The next prime is 70798753. The reversal of 70798739 is 93789707.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-70798739 is a prime.

It is a super-2 number, since 2×70798739² = 10024922887980242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70798733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5234 + ... + 12999.

It is an arithmetic number, because the mean of its divisors is an integer number (9682254).

Almost surely, 2^70798739 is an apocalyptic number.

70798739 is a deficient number, since it is larger than the sum of its proper divisors (6659293).

70798739 is a wasteful number, since it uses less digits than its factorization.

70798739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18597.

The product of its (nonzero) digits is 666792, while the sum is 50.

The square root of 70798739 is about 8414.1986546551. The cubic root of 70798739 is about 413.6901440416.

The spelling of 70798739 in words is "seventy million, seven hundred ninety-eight thousand, seven hundred thirty-nine".