66248770 has 16 divisors (see below), whose sum is σ = 136283328. Its totient is φ = 22713840.

The previous prime is 66248761. The next prime is 66248807. The reversal of 66248770 is 7784266.

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, 473136 + ... + 473275.

It is an arithmetic number, because the mean of its divisors is an integer number (8517708).

Almost surely, 2^66248770 is an apocalyptic number.

66248770 is an abundant number, since it is smaller than the sum of its proper divisors (70034558).

66248770 is a wasteful number, since it uses less digits than its factorization.

66248770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946425.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 66248770 is about 8139.3347393998. The cubic root of 66248770 is about 404.6311125652.

The spelling of 66248770 in words is "sixty-six million, two hundred forty-eight thousand, seven hundred seventy".