780673963 has 2 divisors, whose sum is σ = 780673964. Its totient is φ = 780673962.

The previous prime is 780673937. The next prime is 780673967. The reversal of 780673963 is 369376087.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 780673963 - 2⁹ = 780673451 is a prime.

It is a super-2 number, since 2×780673963² = 1218903673012250738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (780673967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390336981 + 390336982.

It is an arithmetic number, because the mean of its divisors is an integer number (390336982).

Almost surely, 2^780673963 is an apocalyptic number.

780673963 is a deficient number, since it is larger than the sum of its proper divisors (1).

780673963 is an equidigital number, since it uses as much as digits as its factorization.

780673963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 49.

The square root of 780673963 is about 27940.5433554897. The cubic root of 780673963 is about 920.7814575682.

The spelling of 780673963 in words is "seven hundred eighty million, six hundred seventy-three thousand, nine hundred sixty-three".