61554464 has 24 divisors (see below), whose sum is σ = 123243120. Its totient is φ = 30254656.

The previous prime is 61554431. The next prime is 61554497. The reversal of 61554464 is 46445516.

It is an interprime number because it is at equal distance from previous prime (61554431) and next prime (61554497).

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, 14414 + ... + 18189.

It is an arithmetic number, because the mean of its divisors is an integer number (5135130).

Almost surely, 2^61554464 is an apocalyptic number.

It is an amenable number.

61554464 is an abundant number, since it is smaller than the sum of its proper divisors (61688656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61554464 is a wasteful number, since it uses less digits than its factorization.

61554464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32672 (or 32664 counting only the distinct ones).

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

The square root of 61554464 is about 7845.6653000240. The cubic root of 61554464 is about 394.8388254471.

The spelling of 61554464 in words is "sixty-one million, five hundred fifty-four thousand, four hundred sixty-four".