70432981 has 8 divisors (see below), whose sum is σ = 74343200. Its totient is φ = 66543120.

The previous prime is 70432937. The next prime is 70432997. The reversal of 70432981 is 18923407.

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

It is a cyclic number.

It is not a de Polignac number, because 70432981 - 2⁹ = 70432469 is a prime.

It is a super-2 number, since 2×70432981² = 9921609625092722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70432081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2311 + ... + 12091.

It is an arithmetic number, because the mean of its divisors is an integer number (9292900).

Almost surely, 2^70432981 is an apocalyptic number.

It is an amenable number.

70432981 is a deficient number, since it is larger than the sum of its proper divisors (3910219).

70432981 is a wasteful number, since it uses less digits than its factorization.

70432981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10179.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 70432981 is about 8392.4359395827. The cubic root of 70432981 is about 412.9765164767.

The spelling of 70432981 in words is "seventy million, four hundred thirty-two thousand, nine hundred eighty-one".