61869634 has 4 divisors (see below), whose sum is σ = 92804454. Its totient is φ = 30934816.

The previous prime is 61869593. The next prime is 61869637. The reversal of 61869634 is 43696816.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 42289009 + 19580625 = 6503^2 + 4425^2 .

It is a super-3 number, since 3×61869634³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (61869637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15467407 + ... + 15467410.

Almost surely, 2^61869634 is an apocalyptic number.

61869634 is a deficient number, since it is larger than the sum of its proper divisors (30934820).

61869634 is a wasteful number, since it uses less digits than its factorization.

61869634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30934819.

The product of its digits is 186624, while the sum is 43.

The square root of 61869634 is about 7865.7252685306. The cubic root of 61869634 is about 395.5115606652.

The spelling of 61869634 in words is "sixty-one million, eight hundred sixty-nine thousand, six hundred thirty-four".