61275969 has 24 divisors (see below), whose sum is σ = 93562560. Its totient is φ = 38536992.

The previous prime is 61275961. The next prime is 61276021. The reversal of 61275969 is 96957216.

It is a happy number.

It is not a de Polignac number, because 61275969 - 2³ = 61275961 is a prime.

It is a super-2 number, since 2×61275969² = 7509488753777922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61275961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49492 + ... + 50714.

It is an arithmetic number, because the mean of its divisors is an integer number (3898440).

Almost surely, 2^61275969 is an apocalyptic number.

It is an amenable number.

61275969 is a deficient number, since it is larger than the sum of its proper divisors (32286591).

61275969 is a wasteful number, since it uses less digits than its factorization.

61275969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541 (or 1538 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 61275969 is about 7827.8968439805. The cubic root of 61275969 is about 394.2424598671.

The spelling of 61275969 in words is "sixty-one million, two hundred seventy-five thousand, nine hundred sixty-nine".