61575464 has 8 divisors (see below), whose sum is σ = 115454010. Its totient is φ = 30787728.

The previous prime is 61575461. The next prime is 61575467. The reversal of 61575464 is 46457516.

It is an interprime number because it is at equal distance from previous prime (61575461) and next prime (61575467).

It can be written as a sum of positive squares in only one way, i.e., 57123364 + 4452100 = 7558^2 + 2110^2 .

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

It is not an unprimeable number, because it can be changed into a prime (61575461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3848459 + ... + 3848474.

Almost surely, 2^61575464 is an apocalyptic number.

It is an amenable number.

61575464 is a deficient number, since it is larger than the sum of its proper divisors (53878546).

61575464 is a wasteful number, since it uses less digits than its factorization.

61575464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7696939 (or 7696935 counting only the distinct ones).

The product of its digits is 100800, while the sum is 38.

The square root of 61575464 is about 7847.0035045232. The cubic root of 61575464 is about 394.8837215822.

The spelling of 61575464 in words is "sixty-one million, five hundred seventy-five thousand, four hundred sixty-four".