66261470 has 16 divisors (see below), whose sum is σ = 130113648. Its totient is φ = 24095040.

The previous prime is 66261469. The next prime is 66261499. The reversal of 66261470 is 7416266.

It is a super-3 number, since 3×66261470³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301079 + ... + 301298.

It is an arithmetic number, because the mean of its divisors is an integer number (8132103).

Almost surely, 2^66261470 is an apocalyptic number.

66261470 is a deficient number, since it is larger than the sum of its proper divisors (63852178).

66261470 is a wasteful number, since it uses less digits than its factorization.

66261470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602395.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 66261470 is about 8140.1148640544. The cubic root of 66261470 is about 404.6569670668.

The spelling of 66261470 in words is "sixty-six million, two hundred sixty-one thousand, four hundred seventy".