61676145 has 24 divisors (see below), whose sum is σ = 107341416. Its totient is φ = 32759808.

The previous prime is 61676137. The next prime is 61676159. The reversal of 61676145 is 54167616.

It can be written as a sum of positive squares in 4 ways, for example, as 44635761 + 17040384 = 6681^2 + 4128^2 .

It is not a de Polignac number, because 61676145 - 2³ = 61676137 is a prime.

It is a super-2 number, since 2×61676145² = 7607893724122050, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8899 + ... + 14231.

It is an arithmetic number, because the mean of its divisors is an integer number (4472559).

Almost surely, 2^61676145 is an apocalyptic number.

It is an amenable number.

61676145 is a deficient number, since it is larger than the sum of its proper divisors (45665271).

61676145 is a wasteful number, since it uses less digits than its factorization.

61676145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5601 (or 5598 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 61676145 is about 7853.4161356699. The cubic root of 61676145 is about 395.0988269517.

The spelling of 61676145 in words is "sixty-one million, six hundred seventy-six thousand, one hundred forty-five".