747471506 has 4 divisors (see below), whose sum is σ = 1121207262. Its totient is φ = 373735752.

The previous prime is 747471467. The next prime is 747471551. The reversal of 747471506 is 605174747.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 605174747 = 13457 ⋅44971.

It can be written as a sum of positive squares in only one way, i.e., 724094281 + 23377225 = 26909^2 + 4835^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186867875 + ... + 186867878.

Almost surely, 2^747471506 is an apocalyptic number.

747471506 is a deficient number, since it is larger than the sum of its proper divisors (373735756).

747471506 is a wasteful number, since it uses less digits than its factorization.

747471506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373735755.

The product of its (nonzero) digits is 164640, while the sum is 41.

The square root of 747471506 is about 27339.9251279150. The cubic root of 747471506 is about 907.5381294202.

The spelling of 747471506 in words is "seven hundred forty-seven million, four hundred seventy-one thousand, five hundred six".