780047481 has 32 divisors (see below), whose sum is σ = 1103880960. Its totient is φ = 489192704.

The previous prime is 780047479. The next prime is 780047503. The reversal of 780047481 is 184740087.

It is a cyclic number.

It is not a de Polignac number, because 780047481 - 2¹ = 780047479 is a prime.

It is a super-2 number, since 2×780047481² = 1216948145228890722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (780047381) 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, 769531 + ... + 770543.

It is an arithmetic number, because the mean of its divisors is an integer number (34496280).

Almost surely, 2^780047481 is an apocalyptic number.

It is an amenable number.

780047481 is a deficient number, since it is larger than the sum of its proper divisors (323833479).

780047481 is a wasteful number, since it uses less digits than its factorization.

780047481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265.

The product of its (nonzero) digits is 50176, while the sum is 39.

The square root of 780047481 is about 27929.3301208604. The cubic root of 780047481 is about 920.5350860946.

The spelling of 780047481 in words is "seven hundred eighty million, forty-seven thousand, four hundred eighty-one".