345210348690 has 32 divisors (see below), whose sum is σ = 920560930560. Its totient is φ = 92056092912.

The previous prime is 345210348653. The next prime is 345210348697. The reversal of 345210348690 is 96843012543.

345210348690 is a `hidden beast` number, since 3 + 4 + 5 + 210 + 348 + 6 + 90 = 666.

It is a super-2 number, since 2×345210348690² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (345210348697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 639278154 + ... + 639278693.

It is an arithmetic number, because the mean of its divisors is an integer number (28767529080).

Almost surely, 2^345210348690 is an apocalyptic number.

345210348690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

345210348690 is an abundant number, since it is smaller than the sum of its proper divisors (575350581870).

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

345210348690 is a wasteful number, since it uses less digits than its factorization.

345210348690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278556863 (or 1278556857 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 345210348690 in words is "three hundred forty-five billion, two hundred ten million, three hundred forty-eight thousand, six hundred ninety".