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61672095 = 3251370491
BaseRepresentation
bin1110101101000…
…0101010011111
311022001021012200
43223100222133
5111242001340
610041502543
71346130012
oct353205237
9138037180
1061672095
11318a3181
12187a1a53
13ca14084
148295379
155633330
hex3ad0a9f

61672095 has 12 divisors (see below), whose sum is σ = 106898376. Its totient is φ = 32891760.

The previous prime is 61672069. The next prime is 61672099. The reversal of 61672095 is 59027616.

It is not a de Polignac number, because 61672095 - 26 = 61672031 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61672099) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 685201 + ... + 685290.

It is an arithmetic number, because the mean of its divisors is an integer number (8908198).

Almost surely, 261672095 is an apocalyptic number.

61672095 is a deficient number, since it is larger than the sum of its proper divisors (45226281).

61672095 is a wasteful number, since it uses less digits than its factorization.

61672095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370502 (or 1370499 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 61672095 is about 7853.1582818634. The cubic root of 61672095 is about 395.0901786308.

The spelling of 61672095 in words is "sixty-one million, six hundred seventy-two thousand, ninety-five".

Divisors: 1 3 5 9 15 45 1370491 4111473 6852455 12334419 20557365 61672095