70821982 has 16 divisors (see below), whose sum is σ = 132446592. Its totient is φ = 27592920.

The previous prime is 70821979. The next prime is 70822009. The reversal of 70821982 is 28912807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229788 + ... + 230095.

It is an arithmetic number, because the mean of its divisors is an integer number (8277912).

Almost surely, 2^70821982 is an apocalyptic number.

70821982 is a deficient number, since it is larger than the sum of its proper divisors (61624610).

70821982 is a wasteful number, since it uses less digits than its factorization.

70821982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459903.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 70821982 is about 8415.5797185934. The cubic root of 70821982 is about 413.7354101396.

The spelling of 70821982 in words is "seventy million, eight hundred twenty-one thousand, nine hundred eighty-two".