70649442 has 16 divisors (see below), whose sum is σ = 156998880. Its totient is φ = 23549796.

The previous prime is 70649419. The next prime is 70649443. The reversal of 70649442 is 24494607.

70649442 is a `hidden beast` number, since 7 + 0 + 649 + 4 + 4 + 2 = 666.

It is a super-2 number, since 2×70649442² = 9982687309822728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70649397 and 70649406.

It is not an unprimeable number, because it can be changed into a prime (70649443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 654108 + ... + 654215.

It is an arithmetic number, because the mean of its divisors is an integer number (9812430).

Almost surely, 2^70649442 is an apocalyptic number.

70649442 is an abundant number, since it is smaller than the sum of its proper divisors (86349438).

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

70649442 is a wasteful number, since it uses less digits than its factorization.

70649442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308334 (or 1308328 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 70649442 is about 8405.3222424842. The cubic root of 70649442 is about 413.3991493934.

The spelling of 70649442 in words is "seventy million, six hundred forty-nine thousand, four hundred forty-two".