61621592 has 16 divisors (see below), whose sum is σ = 115643040. Its totient is φ = 30783456.

The previous prime is 61621589. The next prime is 61621597. The reversal of 61621592 is 29512616.

It is a happy number.

It is a super-2 number, since 2×61621592² = 7594441201228928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61621597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8678 + ... + 14090.

It is an arithmetic number, because the mean of its divisors is an integer number (7227690).

Almost surely, 2^61621592 is an apocalyptic number.

It is an amenable number.

61621592 is a deficient number, since it is larger than the sum of its proper divisors (54021448).

61621592 is a wasteful number, since it uses less digits than its factorization.

61621592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6842 (or 6838 counting only the distinct ones).

The product of its digits is 6480, while the sum is 32.

The square root of 61621592 is about 7849.9421653920. The cubic root of 61621592 is about 394.9823033251.

The spelling of 61621592 in words is "sixty-one million, six hundred twenty-one thousand, five hundred ninety-two".