65415388 has 12 divisors (see below), whose sum is σ = 121210992. Its totient is φ = 30783680.

The previous prime is 65415379. The next prime is 65415431. The reversal of 65415388 is 88351456.

It is a self number, because there is not a number n which added to its sum of digits gives 65415388.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480928 + ... + 481063.

It is an arithmetic number, because the mean of its divisors is an integer number (10100916).

Almost surely, 2^65415388 is an apocalyptic number.

65415388 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

65415388 is a deficient number, since it is larger than the sum of its proper divisors (55795604).

65415388 is a wasteful number, since it uses less digits than its factorization.

65415388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962012 (or 962010 counting only the distinct ones).

The product of its digits is 115200, while the sum is 40.

The square root of 65415388 is about 8087.9779920571. The cubic root of 65415388 is about 402.9272507513.

The spelling of 65415388 in words is "sixty-five million, four hundred fifteen thousand, three hundred eighty-eight".