64040870 has 32 divisors (see below), whose sum is σ = 122472000. Its totient is φ = 24027136.

The previous prime is 64040869. The next prime is 64040897. The reversal of 64040870 is 7804046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75911 + ... + 76749.

It is an arithmetic number, because the mean of its divisors is an integer number (3827250).

Almost surely, 2^64040870 is an apocalyptic number.

64040870 is a deficient number, since it is larger than the sum of its proper divisors (58431130).

64040870 is a wasteful number, since it uses less digits than its factorization.

64040870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 64040870 is about 8002.5539673282. The cubic root of 64040870 is about 400.0851277152.

The spelling of 64040870 in words is "sixty-four million, forty thousand, eight hundred seventy".