61545464 has 8 divisors (see below), whose sum is σ = 115397760. Its totient is φ = 30772728.

The previous prime is 61545439. The next prime is 61545481. The reversal of 61545464 is 46454516.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3846584 + ... + 3846599.

It is an arithmetic number, because the mean of its divisors is an integer number (14424720).

Almost surely, 2^61545464 is an apocalyptic number.

It is an amenable number.

61545464 is a deficient number, since it is larger than the sum of its proper divisors (53852296).

61545464 is a wasteful number, since it uses less digits than its factorization.

61545464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7693189 (or 7693185 counting only the distinct ones).

The product of its digits is 57600, while the sum is 35.

The square root of 61545464 is about 7845.0917139317. The cubic root of 61545464 is about 394.8195811205.

The spelling of 61545464 in words is "sixty-one million, five hundred forty-five thousand, four hundred sixty-four".