61672637 has 8 divisors (see below), whose sum is σ = 69304704. Its totient is φ = 54453168.

The previous prime is 61672627. The next prime is 61672649. The reversal of 61672637 is 73627616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61672637 - 2⁸ = 61672381 is a prime.

It is a super-3 number, since 3×61672637³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61672637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61672627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102833 + ... + 103430.

It is an arithmetic number, because the mean of its divisors is an integer number (8663088).

Almost surely, 2^61672637 is an apocalyptic number.

It is an amenable number.

61672637 is a deficient number, since it is larger than the sum of its proper divisors (7632067).

61672637 is a wasteful number, since it uses less digits than its factorization.

61672637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206299.

The product of its digits is 63504, while the sum is 38.

The square root of 61672637 is about 7853.1927901969. The cubic root of 61672637 is about 395.0913360330.

The spelling of 61672637 in words is "sixty-one million, six hundred seventy-two thousand, six hundred thirty-seven".