65153949 has 16 divisors (see below), whose sum is σ = 100766208. Its totient is φ = 36674352.

The previous prime is 65153947. The next prime is 65153951. The reversal of 65153949 is 94935156.

It is an interprime number because it is at equal distance from previous prime (65153947) and next prime (65153951).

It is not a de Polignac number, because 65153949 - 2¹ = 65153947 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 65153949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65153947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21747 + ... + 24560.

It is an arithmetic number, because the mean of its divisors is an integer number (6297888).

Almost surely, 2^65153949 is an apocalyptic number.

It is an amenable number.

65153949 is a deficient number, since it is larger than the sum of its proper divisors (35612259).

65153949 is a wasteful number, since it uses less digits than its factorization.

65153949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46384.

The product of its digits is 145800, while the sum is 42.

The square root of 65153949 is about 8071.7996134691. The cubic root of 65153949 is about 402.3897546655.

The spelling of 65153949 in words is "sixty-five million, one hundred fifty-three thousand, nine hundred forty-nine".