780954642 has 32 divisors (see below), whose sum is σ = 1868952960. Its totient is φ = 240293520.

The previous prime is 780954641. The next prime is 780954703. The reversal of 780954642 is 246459087.

It is a happy number.

It is a super-2 number, since 2×780954642² = 1219780305722696328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (780954641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 555534 + ... + 556937.

It is an arithmetic number, because the mean of its divisors is an integer number (58404780).

Almost surely, 2^780954642 is an apocalyptic number.

780954642 is an abundant number, since it is smaller than the sum of its proper divisors (1087998318).

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

780954642 is a wasteful number, since it uses less digits than its factorization.

780954642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112495 (or 1112489 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 780954642 is about 27945.5656947574. The cubic root of 780954642 is about 920.8917951586.

The spelling of 780954642 in words is "seven hundred eighty million, nine hundred fifty-four thousand, six hundred forty-two".