70431705 has 12 divisors (see below), whose sum is σ = 122081700. Its totient is φ = 37563552.

The previous prime is 70431703. The next prime is 70431719. The reversal of 70431705 is 50713407.

It can be written as a sum of positive squares in 2 ways, for example, as 32387481 + 38044224 = 5691^2 + 6168^2 .

It is not a de Polignac number, because 70431705 - 2¹ = 70431703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70431701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 782530 + ... + 782619.

It is an arithmetic number, because the mean of its divisors is an integer number (10173475).

Almost surely, 2^70431705 is an apocalyptic number.

It is an amenable number.

70431705 is a deficient number, since it is larger than the sum of its proper divisors (51649995).

70431705 is a wasteful number, since it uses less digits than its factorization.

70431705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565160 (or 1565157 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 70431705 is about 8392.3599184020. The cubic root of 70431705 is about 412.9740225635.

The spelling of 70431705 in words is "seventy million, four hundred thirty-one thousand, seven hundred five".