70404642 has 96 divisors (see below), whose sum is σ = 192890880. Its totient is φ = 18027360.

The previous prime is 70404623. The next prime is 70404643. The reversal of 70404642 is 24640407.

It is not an unprimeable number, because it can be changed into a prime (70404643) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 109173 + ... + 109815.

It is an arithmetic number, because the mean of its divisors is an integer number (2009280).

Almost surely, 2^70404642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70404642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96445440).

70404642 is an abundant number, since it is smaller than the sum of its proper divisors (122486238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70404642 is a wasteful number, since it uses less digits than its factorization.

70404642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748 (or 745 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 70404642 is about 8390.7474041351. The cubic root of 70404642 is about 412.9211214458.

The spelling of 70404642 in words is "seventy million, four hundred four thousand, six hundred forty-two".