70279261 has 8 divisors (see below), whose sum is σ = 75751200. Its totient is φ = 64816752.

The previous prime is 70279249. The next prime is 70279303. The reversal of 70279261 is 16297207.

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

It is not a de Polignac number, because 70279261 - 2⁵ = 70279229 is a prime.

It is a super-2 number, since 2×70279261² = 9878349053412242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70279211) 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, 24690 + ... + 27388.

It is an arithmetic number, because the mean of its divisors is an integer number (9468900).

Almost surely, 2^70279261 is an apocalyptic number.

It is an amenable number.

70279261 is a deficient number, since it is larger than the sum of its proper divisors (5471939).

70279261 is a wasteful number, since it uses less digits than its factorization.

70279261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4715.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 70279261 is about 8383.2726903042. The cubic root of 70279261 is about 412.6758571880.

The spelling of 70279261 in words is "seventy million, two hundred seventy-nine thousand, two hundred sixty-one".