70229081 has 8 divisors (see below), whose sum is σ = 77059080. Its totient is φ = 63603072.

The previous prime is 70229069. The next prime is 70229101. The reversal of 70229081 is 18092207.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18619225 + 51609856 = 4315^2 + 7184^2 .

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

It is not a de Polignac number, because 70229081 - 2²⁶ = 3120217 is a prime.

It is a super-2 number, since 2×70229081² = 9864247636209122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70229021) 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, 50276 + ... + 51653.

It is an arithmetic number, because the mean of its divisors is an integer number (9632385).

Almost surely, 2^70229081 is an apocalyptic number.

It is an amenable number.

70229081 is a deficient number, since it is larger than the sum of its proper divisors (6829999).

70229081 is a wasteful number, since it uses less digits than its factorization.

70229081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101995.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 70229081 is about 8380.2792912886. The cubic root of 70229081 is about 412.5776157592.

The spelling of 70229081 in words is "seventy million, two hundred twenty-nine thousand, eighty-one".