70921994 has 64 divisors (see below), whose sum is σ = 137168640. Its totient is φ = 26987520.

The previous prime is 70921993. The next prime is 70922009. The reversal of 70921994 is 49912907.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (70921993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140747 + ... + 141249.

It is an arithmetic number, because the mean of its divisors is an integer number (2143260).

Almost surely, 2^70921994 is an apocalyptic number.

70921994 is a deficient number, since it is larger than the sum of its proper divisors (66246646).

70921994 is a wasteful number, since it uses less digits than its factorization.

70921994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 70921994 is about 8421.5196965868. The cubic root of 70921994 is about 413.9300721275.

The spelling of 70921994 in words is "seventy million, nine hundred twenty-one thousand, nine hundred ninety-four".