61653297 has 8 divisors (see below), whose sum is σ = 83052256. Its totient is φ = 40678272.

The previous prime is 61653281. The next prime is 61653301. The reversal of 61653297 is 79235616.

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

It is not a de Polignac number, because 61653297 - 2⁴ = 61653281 is a prime.

It is a super-2 number, since 2×61653297² = 7602258061940418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61653497) 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, 105643 + ... + 106224.

It is an arithmetic number, because the mean of its divisors is an integer number (10381532).

Almost surely, 2^61653297 is an apocalyptic number.

It is an amenable number.

61653297 is a deficient number, since it is larger than the sum of its proper divisors (21398959).

61653297 is a wasteful number, since it uses less digits than its factorization.

61653297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211967.

The product of its digits is 68040, while the sum is 39.

The square root of 61653297 is about 7851.9613473323. The cubic root of 61653297 is about 395.0500326518.

The spelling of 61653297 in words is "sixty-one million, six hundred fifty-three thousand, two hundred ninety-seven".