61621498 has 16 divisors (see below), whose sum is σ = 98478720. Its totient is φ = 28817856.

The previous prime is 61621493. The next prime is 61621507. The reversal of 61621498 is 89412616.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (61621493) 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, 18 + ... + 11101.

It is an arithmetic number, because the mean of its divisors is an integer number (6154920).

Almost surely, 2^61621498 is an apocalyptic number.

61621498 is a deficient number, since it is larger than the sum of its proper divisors (36857222).

61621498 is a wasteful number, since it uses less digits than its factorization.

61621498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11301.

The product of its digits is 20736, while the sum is 37.

The square root of 61621498 is about 7849.9361780845. The cubic root of 61621498 is about 394.9821024845.

The spelling of 61621498 in words is "sixty-one million, six hundred twenty-one thousand, four hundred ninety-eight".