781040967 has 32 divisors (see below), whose sum is σ = 1212309504. Its totient is φ = 438060000.

The previous prime is 781040951. The next prime is 781040977. The reversal of 781040967 is 769040187.

It is not a de Polignac number, because 781040967 - 2⁴ = 781040951 is a prime.

It is a super-2 number, since 2×781040967² = 1220049984264590178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (781040927) 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, 373198 + ... + 375284.

It is an arithmetic number, because the mean of its divisors is an integer number (37884672).

Almost surely, 2^781040967 is an apocalyptic number.

781040967 is a deficient number, since it is larger than the sum of its proper divisors (431268537).

781040967 is a wasteful number, since it uses less digits than its factorization.

781040967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2419.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 781040967 is about 27947.1101726100. The cubic root of 781040967 is about 920.9257250229.

The spelling of 781040967 in words is "seven hundred eighty-one million, forty thousand, nine hundred sixty-seven".