345778545 has 24 divisors (see below), whose sum is σ = 643572864. Its totient is φ = 158069856.

The previous prime is 345778541. The next prime is 345778567. The reversal of 345778545 is 545877543.

It is not a de Polignac number, because 345778545 - 2² = 345778541 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 345778494 and 345778503.

It is not an unprimeable number, because it can be changed into a prime (345778541) 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 23 ways as a sum of consecutive naturals, for example, 234489 + ... + 235958.

It is an arithmetic number, because the mean of its divisors is an integer number (26815536).

Almost surely, 2^345778545 is an apocalyptic number.

345778545 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

345778545 is a deficient number, since it is larger than the sum of its proper divisors (297794319).

345778545 is a wasteful number, since it uses less digits than its factorization.

345778545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470469 (or 470462 counting only the distinct ones).

The product of its digits is 2352000, while the sum is 48.

The square root of 345778545 is about 18595.1215376507. The cubic root of 345778545 is about 701.8850856129.

The spelling of 345778545 in words is "three hundred forty-five million, seven hundred seventy-eight thousand, five hundred forty-five".