61653478 has 32 divisors (see below), whose sum is σ = 100958400. Its totient is φ = 28148736.

The previous prime is 61653457. The next prime is 61653497. The reversal of 61653478 is 87435616.

It is a happy number.

Its product of digits (120960) is a multiple of the sum of its prime divisors (576).

It is a self number, because there is not a number n which added to its sum of digits gives 61653478.

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, 150538 + ... + 150946.

It is an arithmetic number, because the mean of its divisors is an integer number (3154950).

Almost surely, 2^61653478 is an apocalyptic number.

61653478 is a deficient number, since it is larger than the sum of its proper divisors (39304922).

61653478 is a wasteful number, since it uses less digits than its factorization.

61653478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576.

The product of its digits is 120960, while the sum is 40.

The square root of 61653478 is about 7851.9728731065. The cubic root of 61653478 is about 395.0504192437.

The spelling of 61653478 in words is "sixty-one million, six hundred fifty-three thousand, four hundred seventy-eight".